]> jfr.im git - irc/rqf/shadowircd.git/commitdiff
Add blowfish to libratbox crypt.
authorElizabeth Jennifer Myers <redacted>
Mon, 17 Jan 2011 10:01:11 +0000 (05:01 -0500)
committerElizabeth Jennifer Myers <redacted>
Mon, 17 Jan 2011 10:01:11 +0000 (05:01 -0500)
Also change u_int*_t to uint*_t whilst I'm here.

libratbox/src/crypt.c

index 6123d12b5adccf6dd8d5773ad8669da9495a85a0..7bb27c2d925cc5ec533db47a5be53be413dcc9d2 100644 (file)
@@ -34,19 +34,24 @@ static char *rb_md5_crypt(const char *pw, const char *salt);
 static char *rb_des_crypt(const char *pw, const char *salt);
 static char *rb_sha256_crypt(const char *key, const char *salt);
 static char *rb_sha512_crypt(const char *key, const char *salt);
+static char *rb_blowfish_crypt(const char *key, const char *salt);
 
 char *
 rb_crypt(const char *key, const char *salt)
 {
        /* First, check if we are supposed to be using a replacement
         * hash instead of DES...  */
-       if(salt[0] == '$' && salt[2] == '$')
+       if(salt[0] == '$' && (salt[2] == '$' || salt[3] == '$'))
        {
                switch(salt[1])
                {
                case '1':
                        return rb_md5_crypt(key, salt);
                        break;
+               case '2':
+                       /* Handles both 2 and 2a --Elizabeth */
+                       return rb_blowfish_crypt(key, salt);
+                       break;
                case '5':
                        return rb_sha256_crypt(key, salt);
                        break;
@@ -764,12 +769,12 @@ _crypt_to64(char *s, u_long v, int n)
 
 /* MD5 context. */
 typedef struct MD5Context {
-       u_int32_t state[4];   /* state (ABCD) */
-       u_int32_t count[2];   /* number of bits, modulo 2^64 (lsb first) */
+       uint32_t state[4];   /* state (ABCD) */
+       uint32_t count[2];   /* number of bits, modulo 2^64 (lsb first) */
        unsigned char buffer[64];     /* input buffer */
 } MD5_CTX;
 
-static void   MD5Transform(u_int32_t [4], const unsigned char [64]);
+static void   MD5Transform(uint32_t [4], const unsigned char [64]);
 static void   MD5Init (MD5_CTX *);
 static void   MD5Update (MD5_CTX *, const void *, unsigned int);
 static void   MD5Final (unsigned char [16], MD5_CTX *);
@@ -780,30 +785,30 @@ static void   MD5Final (unsigned char [16], MD5_CTX *);
 #else 
 
 /*
- * Encodes input (u_int32_t) into output (unsigned char). Assumes len is
+ * Encodes input (uint32_t) into output (unsigned char). Assumes len is
  * a multiple of 4.
  */
 
 static void
-Encode (unsigned char *output, u_int32_t *input, unsigned int len)
+Encode (unsigned char *output, uint32_t *input, unsigned int len)
 {
        unsigned int i;
-       u_int32_t *op = (u_int32_t *)output;
+       uint32_t *op = (uint32_t *)output;
 
        for (i = 0; i < len / 4; i++)
                op[i] = htole32(input[i]);
 }
 
 /*
- * Decodes input (unsigned char) into output (u_int32_t). Assumes len is
+ * Decodes input (unsigned char) into output (uint32_t). Assumes len is
  * a multiple of 4.
  */
 
 static void
-Decode (u_int32_t *output, const unsigned char *input, unsigned int len)
+Decode (uint32_t *output, const unsigned char *input, unsigned int len)
 {
        unsigned int i;
-       const u_int32_t *ip = (const u_int32_t *)input;
+       const uint32_t *ip = (const uint32_t *)input;
 
        for (i = 0; i < len / 4; i++)
                output[i] = le32toh(ip[i]);
@@ -830,22 +835,22 @@ static unsigned char PADDING[64] = {
  * Rotation is separate from addition to prevent recomputation.
  */
 #define FF(a, b, c, d, x, s, ac) { \
-       (a) += F ((b), (c), (d)) + (x) + (u_int32_t)(ac); \
+       (a) += F ((b), (c), (d)) + (x) + (uint32_t)(ac); \
        (a) = ROTATE_LEFT ((a), (s)); \
        (a) += (b); \
        }
 #define GG(a, b, c, d, x, s, ac) { \
-       (a) += G ((b), (c), (d)) + (x) + (u_int32_t)(ac); \
+       (a) += G ((b), (c), (d)) + (x) + (uint32_t)(ac); \
        (a) = ROTATE_LEFT ((a), (s)); \
        (a) += (b); \
        }
 #define HH(a, b, c, d, x, s, ac) { \
-       (a) += H ((b), (c), (d)) + (x) + (u_int32_t)(ac); \
+       (a) += H ((b), (c), (d)) + (x) + (uint32_t)(ac); \
        (a) = ROTATE_LEFT ((a), (s)); \
        (a) += (b); \
        }
 #define II(a, b, c, d, x, s, ac) { \
-       (a) += I ((b), (c), (d)) + (x) + (u_int32_t)(ac); \
+       (a) += I ((b), (c), (d)) + (x) + (uint32_t)(ac); \
        (a) = ROTATE_LEFT ((a), (s)); \
        (a) += (b); \
        }
@@ -885,10 +890,10 @@ MD5Update (context, in, inputLen)
        idx = (unsigned int)((context->count[0] >> 3) & 0x3F);
 
        /* Update number of bits */
-       if ((context->count[0] += ((u_int32_t)inputLen << 3))
-           < ((u_int32_t)inputLen << 3))
+       if ((context->count[0] += ((uint32_t)inputLen << 3))
+           < ((uint32_t)inputLen << 3))
                context->count[1]++;
-       context->count[1] += ((u_int32_t)inputLen >> 29);
+       context->count[1] += ((uint32_t)inputLen >> 29);
 
        partLen = 64 - idx;
 
@@ -958,10 +963,10 @@ MD5Final (digest, context)
 
 static void
 MD5Transform (state, block)
-       u_int32_t state[4];
+       uint32_t state[4];
        const unsigned char block[64];
 {
-       u_int32_t a = state[0], b = state[1], c = state[2], d = state[3], x[16];
+       uint32_t a = state[0], b = state[1], c = state[2], d = state[3], x[16];
 
        Decode (x, block, 64);
 
@@ -1567,7 +1572,7 @@ static char *rb_sha256_crypt_r(const char *key, const char *salt, char *buffer,
        rb_sha256_init_ctx(&alt_ctx);
 
        /* For every character in the password add the entire password.  */
-       for (cnt = 0; cnt < key_len; ++cnt)
+       for (cnt = 0; cnt < (size_t)(16 + alt_result[0]); ++cnt)
                rb_sha256_process_bytes(key, key_len, &alt_ctx);
 
        /* Finish the digest.  */
@@ -2313,3 +2318,739 @@ static char *rb_sha512_crypt(const char *key, const char *salt)
        return rb_sha512_crypt_r(key, salt, buffer, buflen);
 }
 
+
+/* And now blowfish */
+/*
+ * Copyright 1997 Niels Provos <provos@physnet.uni-hamburg.de>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *      This product includes software developed by Niels Provos.
+ * 4. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/* Schneier states the maximum key length to be 56 bytes.
+ * The way how the subkeys are initalized by the key up
+ * to (N+2)*4 i.e. 72 bytes are utilized.
+ * Warning: For normal blowfish encryption only 56 bytes
+ * of the key affect all cipherbits.
+ */
+
+#define BLF_N   16                      /* Number of Subkeys */
+
+/* Blowfish context */
+typedef struct BlowfishContext {
+        uint32_t S[4][256];    /* S-Boxes */
+        uint32_t P[BLF_N + 2]; /* Subkeys */
+} blf_ctx;
+
+/* Raw access to customized Blowfish
+ *      blf_key is just:
+ *      Blowfish_initstate( state )
+ *      Blowfish_expand0state( state, key, keylen )
+ */
+
+void Blowfish_initstate(blf_ctx *);
+void Blowfish_expand0state(blf_ctx *, const uint8_t *, uint16_t);
+void Blowfish_expandstate
+   (blf_ctx *, const uint8_t *, uint16_t, const uint8_t *, uint16_t);
+uint32_t Blowfish_stream2word(const uint8_t *, uint16_t, uint16_t *);
+
+void blf_enc(blf_ctx *, uint32_t *, uint16_t);
+
+/*
+ * This code is derived from section 14.3 and the given source
+ * in section V of Applied Cryptography, second edition.
+ * Blowfish is an unpatented fast block cipher designed by
+ * Bruce Schneier.
+ */
+
+/*
+ * FreeBSD implementation by Paul Herman <pherman@frenchfries.net>
+ */
+
+/* Function for Feistel Networks */
+
+#define _F(s, x) ((((s)[        (((x)>>24)&0xFF)]  \
+                + (s)[0x100 + (((x)>>16)&0xFF)]) \
+                ^ (s)[0x200 + (((x)>> 8)&0xFF)]) \
+                + (s)[0x300 + ( (x)     &0xFF)])
+
+#define BLFRND(s, p, i, j, n) (i ^= _F(s, j) ^ (p)[n])
+
+static void
+Blowfish_encipher(blf_ctx *c, uint32_t *xl, uint32_t *xr)
+{
+       uint32_t Xl;
+       uint32_t Xr;
+       uint32_t *s = c->S[0];
+       uint32_t *p = c->P;
+
+       Xl = *xl;
+       Xr = *xr;
+
+       Xl ^= p[0];
+       BLFRND(s, p, Xr, Xl, 1); BLFRND(s, p, Xl, Xr, 2);
+       BLFRND(s, p, Xr, Xl, 3); BLFRND(s, p, Xl, Xr, 4);
+       BLFRND(s, p, Xr, Xl, 5); BLFRND(s, p, Xl, Xr, 6);
+       BLFRND(s, p, Xr, Xl, 7); BLFRND(s, p, Xl, Xr, 8);
+       BLFRND(s, p, Xr, Xl, 9); BLFRND(s, p, Xl, Xr, 10);
+       BLFRND(s, p, Xr, Xl, 11); BLFRND(s, p, Xl, Xr, 12);
+       BLFRND(s, p, Xr, Xl, 13); BLFRND(s, p, Xl, Xr, 14);
+       BLFRND(s, p, Xr, Xl, 15); BLFRND(s, p, Xl, Xr, 16);
+
+       *xl = Xr ^ p[17];
+       *xr = Xl;
+}
+
+void
+Blowfish_initstate(blf_ctx *c)
+{
+
+/* P-box and S-box tables initialized with digits of Pi */
+
+       const blf_ctx bf_initstate =
+
+       { {
+               {
+                       0xd1310ba6, 0x98dfb5ac, 0x2ffd72db, 0xd01adfb7,
+                       0xb8e1afed, 0x6a267e96, 0xba7c9045, 0xf12c7f99,
+                       0x24a19947, 0xb3916cf7, 0x0801f2e2, 0x858efc16,
+                       0x636920d8, 0x71574e69, 0xa458fea3, 0xf4933d7e,
+                       0x0d95748f, 0x728eb658, 0x718bcd58, 0x82154aee,
+                       0x7b54a41d, 0xc25a59b5, 0x9c30d539, 0x2af26013,
+                       0xc5d1b023, 0x286085f0, 0xca417918, 0xb8db38ef,
+                       0x8e79dcb0, 0x603a180e, 0x6c9e0e8b, 0xb01e8a3e,
+                       0xd71577c1, 0xbd314b27, 0x78af2fda, 0x55605c60,
+                       0xe65525f3, 0xaa55ab94, 0x57489862, 0x63e81440,
+                       0x55ca396a, 0x2aab10b6, 0xb4cc5c34, 0x1141e8ce,
+                       0xa15486af, 0x7c72e993, 0xb3ee1411, 0x636fbc2a,
+                       0x2ba9c55d, 0x741831f6, 0xce5c3e16, 0x9b87931e,
+                       0xafd6ba33, 0x6c24cf5c, 0x7a325381, 0x28958677,
+                       0x3b8f4898, 0x6b4bb9af, 0xc4bfe81b, 0x66282193,
+                       0x61d809cc, 0xfb21a991, 0x487cac60, 0x5dec8032,
+                       0xef845d5d, 0xe98575b1, 0xdc262302, 0xeb651b88,
+                       0x23893e81, 0xd396acc5, 0x0f6d6ff3, 0x83f44239,
+                       0x2e0b4482, 0xa4842004, 0x69c8f04a, 0x9e1f9b5e,
+                       0x21c66842, 0xf6e96c9a, 0x670c9c61, 0xabd388f0,
+                       0x6a51a0d2, 0xd8542f68, 0x960fa728, 0xab5133a3,
+                       0x6eef0b6c, 0x137a3be4, 0xba3bf050, 0x7efb2a98,
+                       0xa1f1651d, 0x39af0176, 0x66ca593e, 0x82430e88,
+                       0x8cee8619, 0x456f9fb4, 0x7d84a5c3, 0x3b8b5ebe,
+                       0xe06f75d8, 0x85c12073, 0x401a449f, 0x56c16aa6,
+                       0x4ed3aa62, 0x363f7706, 0x1bfedf72, 0x429b023d,
+                       0x37d0d724, 0xd00a1248, 0xdb0fead3, 0x49f1c09b,
+                       0x075372c9, 0x80991b7b, 0x25d479d8, 0xf6e8def7,
+                       0xe3fe501a, 0xb6794c3b, 0x976ce0bd, 0x04c006ba,
+                       0xc1a94fb6, 0x409f60c4, 0x5e5c9ec2, 0x196a2463,
+                       0x68fb6faf, 0x3e6c53b5, 0x1339b2eb, 0x3b52ec6f,
+                       0x6dfc511f, 0x9b30952c, 0xcc814544, 0xaf5ebd09,
+                       0xbee3d004, 0xde334afd, 0x660f2807, 0x192e4bb3,
+                       0xc0cba857, 0x45c8740f, 0xd20b5f39, 0xb9d3fbdb,
+                       0x5579c0bd, 0x1a60320a, 0xd6a100c6, 0x402c7279,
+                       0x679f25fe, 0xfb1fa3cc, 0x8ea5e9f8, 0xdb3222f8,
+                       0x3c7516df, 0xfd616b15, 0x2f501ec8, 0xad0552ab,
+                       0x323db5fa, 0xfd238760, 0x53317b48, 0x3e00df82,
+                       0x9e5c57bb, 0xca6f8ca0, 0x1a87562e, 0xdf1769db,
+                       0xd542a8f6, 0x287effc3, 0xac6732c6, 0x8c4f5573,
+                       0x695b27b0, 0xbbca58c8, 0xe1ffa35d, 0xb8f011a0,
+                       0x10fa3d98, 0xfd2183b8, 0x4afcb56c, 0x2dd1d35b,
+                       0x9a53e479, 0xb6f84565, 0xd28e49bc, 0x4bfb9790,
+                       0xe1ddf2da, 0xa4cb7e33, 0x62fb1341, 0xcee4c6e8,
+                       0xef20cada, 0x36774c01, 0xd07e9efe, 0x2bf11fb4,
+                       0x95dbda4d, 0xae909198, 0xeaad8e71, 0x6b93d5a0,
+                       0xd08ed1d0, 0xafc725e0, 0x8e3c5b2f, 0x8e7594b7,
+                       0x8ff6e2fb, 0xf2122b64, 0x8888b812, 0x900df01c,
+                       0x4fad5ea0, 0x688fc31c, 0xd1cff191, 0xb3a8c1ad,
+                       0x2f2f2218, 0xbe0e1777, 0xea752dfe, 0x8b021fa1,
+                       0xe5a0cc0f, 0xb56f74e8, 0x18acf3d6, 0xce89e299,
+                       0xb4a84fe0, 0xfd13e0b7, 0x7cc43b81, 0xd2ada8d9,
+                       0x165fa266, 0x80957705, 0x93cc7314, 0x211a1477,
+                       0xe6ad2065, 0x77b5fa86, 0xc75442f5, 0xfb9d35cf,
+                       0xebcdaf0c, 0x7b3e89a0, 0xd6411bd3, 0xae1e7e49,
+                       0x00250e2d, 0x2071b35e, 0x226800bb, 0x57b8e0af,
+                       0x2464369b, 0xf009b91e, 0x5563911d, 0x59dfa6aa,
+                       0x78c14389, 0xd95a537f, 0x207d5ba2, 0x02e5b9c5,
+                       0x83260376, 0x6295cfa9, 0x11c81968, 0x4e734a41,
+                       0xb3472dca, 0x7b14a94a, 0x1b510052, 0x9a532915,
+                       0xd60f573f, 0xbc9bc6e4, 0x2b60a476, 0x81e67400,
+                       0x08ba6fb5, 0x571be91f, 0xf296ec6b, 0x2a0dd915,
+                       0xb6636521, 0xe7b9f9b6, 0xff34052e, 0xc5855664,
+                       0x53b02d5d, 0xa99f8fa1, 0x08ba4799, 0x6e85076a},
+               {
+                       0x4b7a70e9, 0xb5b32944, 0xdb75092e, 0xc4192623,
+                       0xad6ea6b0, 0x49a7df7d, 0x9cee60b8, 0x8fedb266,
+                       0xecaa8c71, 0x699a17ff, 0x5664526c, 0xc2b19ee1,
+                       0x193602a5, 0x75094c29, 0xa0591340, 0xe4183a3e,
+                       0x3f54989a, 0x5b429d65, 0x6b8fe4d6, 0x99f73fd6,
+                       0xa1d29c07, 0xefe830f5, 0x4d2d38e6, 0xf0255dc1,
+                       0x4cdd2086, 0x8470eb26, 0x6382e9c6, 0x021ecc5e,
+                       0x09686b3f, 0x3ebaefc9, 0x3c971814, 0x6b6a70a1,
+                       0x687f3584, 0x52a0e286, 0xb79c5305, 0xaa500737,
+                       0x3e07841c, 0x7fdeae5c, 0x8e7d44ec, 0x5716f2b8,
+                       0xb03ada37, 0xf0500c0d, 0xf01c1f04, 0x0200b3ff,
+                       0xae0cf51a, 0x3cb574b2, 0x25837a58, 0xdc0921bd,
+                       0xd19113f9, 0x7ca92ff6, 0x94324773, 0x22f54701,
+                       0x3ae5e581, 0x37c2dadc, 0xc8b57634, 0x9af3dda7,
+                       0xa9446146, 0x0fd0030e, 0xecc8c73e, 0xa4751e41,
+                       0xe238cd99, 0x3bea0e2f, 0x3280bba1, 0x183eb331,
+                       0x4e548b38, 0x4f6db908, 0x6f420d03, 0xf60a04bf,
+                       0x2cb81290, 0x24977c79, 0x5679b072, 0xbcaf89af,
+                       0xde9a771f, 0xd9930810, 0xb38bae12, 0xdccf3f2e,
+                       0x5512721f, 0x2e6b7124, 0x501adde6, 0x9f84cd87,
+                       0x7a584718, 0x7408da17, 0xbc9f9abc, 0xe94b7d8c,
+                       0xec7aec3a, 0xdb851dfa, 0x63094366, 0xc464c3d2,
+                       0xef1c1847, 0x3215d908, 0xdd433b37, 0x24c2ba16,
+                       0x12a14d43, 0x2a65c451, 0x50940002, 0x133ae4dd,
+                       0x71dff89e, 0x10314e55, 0x81ac77d6, 0x5f11199b,
+                       0x043556f1, 0xd7a3c76b, 0x3c11183b, 0x5924a509,
+                       0xf28fe6ed, 0x97f1fbfa, 0x9ebabf2c, 0x1e153c6e,
+                       0x86e34570, 0xeae96fb1, 0x860e5e0a, 0x5a3e2ab3,
+                       0x771fe71c, 0x4e3d06fa, 0x2965dcb9, 0x99e71d0f,
+                       0x803e89d6, 0x5266c825, 0x2e4cc978, 0x9c10b36a,
+                       0xc6150eba, 0x94e2ea78, 0xa5fc3c53, 0x1e0a2df4,
+                       0xf2f74ea7, 0x361d2b3d, 0x1939260f, 0x19c27960,
+                       0x5223a708, 0xf71312b6, 0xebadfe6e, 0xeac31f66,
+                       0xe3bc4595, 0xa67bc883, 0xb17f37d1, 0x018cff28,
+                       0xc332ddef, 0xbe6c5aa5, 0x65582185, 0x68ab9802,
+                       0xeecea50f, 0xdb2f953b, 0x2aef7dad, 0x5b6e2f84,
+                       0x1521b628, 0x29076170, 0xecdd4775, 0x619f1510,
+                       0x13cca830, 0xeb61bd96, 0x0334fe1e, 0xaa0363cf,
+                       0xb5735c90, 0x4c70a239, 0xd59e9e0b, 0xcbaade14,
+                       0xeecc86bc, 0x60622ca7, 0x9cab5cab, 0xb2f3846e,
+                       0x648b1eaf, 0x19bdf0ca, 0xa02369b9, 0x655abb50,
+                       0x40685a32, 0x3c2ab4b3, 0x319ee9d5, 0xc021b8f7,
+                       0x9b540b19, 0x875fa099, 0x95f7997e, 0x623d7da8,
+                       0xf837889a, 0x97e32d77, 0x11ed935f, 0x16681281,
+                       0x0e358829, 0xc7e61fd6, 0x96dedfa1, 0x7858ba99,
+                       0x57f584a5, 0x1b227263, 0x9b83c3ff, 0x1ac24696,
+                       0xcdb30aeb, 0x532e3054, 0x8fd948e4, 0x6dbc3128,
+                       0x58ebf2ef, 0x34c6ffea, 0xfe28ed61, 0xee7c3c73,
+                       0x5d4a14d9, 0xe864b7e3, 0x42105d14, 0x203e13e0,
+                       0x45eee2b6, 0xa3aaabea, 0xdb6c4f15, 0xfacb4fd0,
+                       0xc742f442, 0xef6abbb5, 0x654f3b1d, 0x41cd2105,
+                       0xd81e799e, 0x86854dc7, 0xe44b476a, 0x3d816250,
+                       0xcf62a1f2, 0x5b8d2646, 0xfc8883a0, 0xc1c7b6a3,
+                       0x7f1524c3, 0x69cb7492, 0x47848a0b, 0x5692b285,
+                       0x095bbf00, 0xad19489d, 0x1462b174, 0x23820e00,
+                       0x58428d2a, 0x0c55f5ea, 0x1dadf43e, 0x233f7061,
+                       0x3372f092, 0x8d937e41, 0xd65fecf1, 0x6c223bdb,
+                       0x7cde3759, 0xcbee7460, 0x4085f2a7, 0xce77326e,
+                       0xa6078084, 0x19f8509e, 0xe8efd855, 0x61d99735,
+                       0xa969a7aa, 0xc50c06c2, 0x5a04abfc, 0x800bcadc,
+                       0x9e447a2e, 0xc3453484, 0xfdd56705, 0x0e1e9ec9,
+                       0xdb73dbd3, 0x105588cd, 0x675fda79, 0xe3674340,
+                       0xc5c43465, 0x713e38d8, 0x3d28f89e, 0xf16dff20,
+                       0x153e21e7, 0x8fb03d4a, 0xe6e39f2b, 0xdb83adf7},
+               {
+                       0xe93d5a68, 0x948140f7, 0xf64c261c, 0x94692934,
+                       0x411520f7, 0x7602d4f7, 0xbcf46b2e, 0xd4a20068,
+                       0xd4082471, 0x3320f46a, 0x43b7d4b7, 0x500061af,
+                       0x1e39f62e, 0x97244546, 0x14214f74, 0xbf8b8840,
+                       0x4d95fc1d, 0x96b591af, 0x70f4ddd3, 0x66a02f45,
+                       0xbfbc09ec, 0x03bd9785, 0x7fac6dd0, 0x31cb8504,
+                       0x96eb27b3, 0x55fd3941, 0xda2547e6, 0xabca0a9a,
+                       0x28507825, 0x530429f4, 0x0a2c86da, 0xe9b66dfb,
+                       0x68dc1462, 0xd7486900, 0x680ec0a4, 0x27a18dee,
+                       0x4f3ffea2, 0xe887ad8c, 0xb58ce006, 0x7af4d6b6,
+                       0xaace1e7c, 0xd3375fec, 0xce78a399, 0x406b2a42,
+                       0x20fe9e35, 0xd9f385b9, 0xee39d7ab, 0x3b124e8b,
+                       0x1dc9faf7, 0x4b6d1856, 0x26a36631, 0xeae397b2,
+                       0x3a6efa74, 0xdd5b4332, 0x6841e7f7, 0xca7820fb,
+                       0xfb0af54e, 0xd8feb397, 0x454056ac, 0xba489527,
+                       0x55533a3a, 0x20838d87, 0xfe6ba9b7, 0xd096954b,
+                       0x55a867bc, 0xa1159a58, 0xcca92963, 0x99e1db33,
+                       0xa62a4a56, 0x3f3125f9, 0x5ef47e1c, 0x9029317c,
+                       0xfdf8e802, 0x04272f70, 0x80bb155c, 0x05282ce3,
+                       0x95c11548, 0xe4c66d22, 0x48c1133f, 0xc70f86dc,
+                       0x07f9c9ee, 0x41041f0f, 0x404779a4, 0x5d886e17,
+                       0x325f51eb, 0xd59bc0d1, 0xf2bcc18f, 0x41113564,
+                       0x257b7834, 0x602a9c60, 0xdff8e8a3, 0x1f636c1b,
+                       0x0e12b4c2, 0x02e1329e, 0xaf664fd1, 0xcad18115,
+                       0x6b2395e0, 0x333e92e1, 0x3b240b62, 0xeebeb922,
+                       0x85b2a20e, 0xe6ba0d99, 0xde720c8c, 0x2da2f728,
+                       0xd0127845, 0x95b794fd, 0x647d0862, 0xe7ccf5f0,
+                       0x5449a36f, 0x877d48fa, 0xc39dfd27, 0xf33e8d1e,
+                       0x0a476341, 0x992eff74, 0x3a6f6eab, 0xf4f8fd37,
+                       0xa812dc60, 0xa1ebddf8, 0x991be14c, 0xdb6e6b0d,
+                       0xc67b5510, 0x6d672c37, 0x2765d43b, 0xdcd0e804,
+                       0xf1290dc7, 0xcc00ffa3, 0xb5390f92, 0x690fed0b,
+                       0x667b9ffb, 0xcedb7d9c, 0xa091cf0b, 0xd9155ea3,
+                       0xbb132f88, 0x515bad24, 0x7b9479bf, 0x763bd6eb,
+                       0x37392eb3, 0xcc115979, 0x8026e297, 0xf42e312d,
+                       0x6842ada7, 0xc66a2b3b, 0x12754ccc, 0x782ef11c,
+                       0x6a124237, 0xb79251e7, 0x06a1bbe6, 0x4bfb6350,
+                       0x1a6b1018, 0x11caedfa, 0x3d25bdd8, 0xe2e1c3c9,
+                       0x44421659, 0x0a121386, 0xd90cec6e, 0xd5abea2a,
+                       0x64af674e, 0xda86a85f, 0xbebfe988, 0x64e4c3fe,
+                       0x9dbc8057, 0xf0f7c086, 0x60787bf8, 0x6003604d,
+                       0xd1fd8346, 0xf6381fb0, 0x7745ae04, 0xd736fccc,
+                       0x83426b33, 0xf01eab71, 0xb0804187, 0x3c005e5f,
+                       0x77a057be, 0xbde8ae24, 0x55464299, 0xbf582e61,
+                       0x4e58f48f, 0xf2ddfda2, 0xf474ef38, 0x8789bdc2,
+                       0x5366f9c3, 0xc8b38e74, 0xb475f255, 0x46fcd9b9,
+                       0x7aeb2661, 0x8b1ddf84, 0x846a0e79, 0x915f95e2,
+                       0x466e598e, 0x20b45770, 0x8cd55591, 0xc902de4c,
+                       0xb90bace1, 0xbb8205d0, 0x11a86248, 0x7574a99e,
+                       0xb77f19b6, 0xe0a9dc09, 0x662d09a1, 0xc4324633,
+                       0xe85a1f02, 0x09f0be8c, 0x4a99a025, 0x1d6efe10,
+                       0x1ab93d1d, 0x0ba5a4df, 0xa186f20f, 0x2868f169,
+                       0xdcb7da83, 0x573906fe, 0xa1e2ce9b, 0x4fcd7f52,
+                       0x50115e01, 0xa70683fa, 0xa002b5c4, 0x0de6d027,
+                       0x9af88c27, 0x773f8641, 0xc3604c06, 0x61a806b5,
+                       0xf0177a28, 0xc0f586e0, 0x006058aa, 0x30dc7d62,
+                       0x11e69ed7, 0x2338ea63, 0x53c2dd94, 0xc2c21634,
+                       0xbbcbee56, 0x90bcb6de, 0xebfc7da1, 0xce591d76,
+                       0x6f05e409, 0x4b7c0188, 0x39720a3d, 0x7c927c24,
+                       0x86e3725f, 0x724d9db9, 0x1ac15bb4, 0xd39eb8fc,
+                       0xed545578, 0x08fca5b5, 0xd83d7cd3, 0x4dad0fc4,
+                       0x1e50ef5e, 0xb161e6f8, 0xa28514d9, 0x6c51133c,
+                       0x6fd5c7e7, 0x56e14ec4, 0x362abfce, 0xddc6c837,
+                       0xd79a3234, 0x92638212, 0x670efa8e, 0x406000e0},
+               {
+                       0x3a39ce37, 0xd3faf5cf, 0xabc27737, 0x5ac52d1b,
+                       0x5cb0679e, 0x4fa33742, 0xd3822740, 0x99bc9bbe,
+                       0xd5118e9d, 0xbf0f7315, 0xd62d1c7e, 0xc700c47b,
+                       0xb78c1b6b, 0x21a19045, 0xb26eb1be, 0x6a366eb4,
+                       0x5748ab2f, 0xbc946e79, 0xc6a376d2, 0x6549c2c8,
+                       0x530ff8ee, 0x468dde7d, 0xd5730a1d, 0x4cd04dc6,
+                       0x2939bbdb, 0xa9ba4650, 0xac9526e8, 0xbe5ee304,
+                       0xa1fad5f0, 0x6a2d519a, 0x63ef8ce2, 0x9a86ee22,
+                       0xc089c2b8, 0x43242ef6, 0xa51e03aa, 0x9cf2d0a4,
+                       0x83c061ba, 0x9be96a4d, 0x8fe51550, 0xba645bd6,
+                       0x2826a2f9, 0xa73a3ae1, 0x4ba99586, 0xef5562e9,
+                       0xc72fefd3, 0xf752f7da, 0x3f046f69, 0x77fa0a59,
+                       0x80e4a915, 0x87b08601, 0x9b09e6ad, 0x3b3ee593,
+                       0xe990fd5a, 0x9e34d797, 0x2cf0b7d9, 0x022b8b51,
+                       0x96d5ac3a, 0x017da67d, 0xd1cf3ed6, 0x7c7d2d28,
+                       0x1f9f25cf, 0xadf2b89b, 0x5ad6b472, 0x5a88f54c,
+                       0xe029ac71, 0xe019a5e6, 0x47b0acfd, 0xed93fa9b,
+                       0xe8d3c48d, 0x283b57cc, 0xf8d56629, 0x79132e28,
+                       0x785f0191, 0xed756055, 0xf7960e44, 0xe3d35e8c,
+                       0x15056dd4, 0x88f46dba, 0x03a16125, 0x0564f0bd,
+                       0xc3eb9e15, 0x3c9057a2, 0x97271aec, 0xa93a072a,
+                       0x1b3f6d9b, 0x1e6321f5, 0xf59c66fb, 0x26dcf319,
+                       0x7533d928, 0xb155fdf5, 0x03563482, 0x8aba3cbb,
+                       0x28517711, 0xc20ad9f8, 0xabcc5167, 0xccad925f,
+                       0x4de81751, 0x3830dc8e, 0x379d5862, 0x9320f991,
+                       0xea7a90c2, 0xfb3e7bce, 0x5121ce64, 0x774fbe32,
+                       0xa8b6e37e, 0xc3293d46, 0x48de5369, 0x6413e680,
+                       0xa2ae0810, 0xdd6db224, 0x69852dfd, 0x09072166,
+                       0xb39a460a, 0x6445c0dd, 0x586cdecf, 0x1c20c8ae,
+                       0x5bbef7dd, 0x1b588d40, 0xccd2017f, 0x6bb4e3bb,
+                       0xdda26a7e, 0x3a59ff45, 0x3e350a44, 0xbcb4cdd5,
+                       0x72eacea8, 0xfa6484bb, 0x8d6612ae, 0xbf3c6f47,
+                       0xd29be463, 0x542f5d9e, 0xaec2771b, 0xf64e6370,
+                       0x740e0d8d, 0xe75b1357, 0xf8721671, 0xaf537d5d,
+                       0x4040cb08, 0x4eb4e2cc, 0x34d2466a, 0x0115af84,
+                       0xe1b00428, 0x95983a1d, 0x06b89fb4, 0xce6ea048,
+                       0x6f3f3b82, 0x3520ab82, 0x011a1d4b, 0x277227f8,
+                       0x611560b1, 0xe7933fdc, 0xbb3a792b, 0x344525bd,
+                       0xa08839e1, 0x51ce794b, 0x2f32c9b7, 0xa01fbac9,
+                       0xe01cc87e, 0xbcc7d1f6, 0xcf0111c3, 0xa1e8aac7,
+                       0x1a908749, 0xd44fbd9a, 0xd0dadecb, 0xd50ada38,
+                       0x0339c32a, 0xc6913667, 0x8df9317c, 0xe0b12b4f,
+                       0xf79e59b7, 0x43f5bb3a, 0xf2d519ff, 0x27d9459c,
+                       0xbf97222c, 0x15e6fc2a, 0x0f91fc71, 0x9b941525,
+                       0xfae59361, 0xceb69ceb, 0xc2a86459, 0x12baa8d1,
+                       0xb6c1075e, 0xe3056a0c, 0x10d25065, 0xcb03a442,
+                       0xe0ec6e0e, 0x1698db3b, 0x4c98a0be, 0x3278e964,
+                       0x9f1f9532, 0xe0d392df, 0xd3a0342b, 0x8971f21e,
+                       0x1b0a7441, 0x4ba3348c, 0xc5be7120, 0xc37632d8,
+                       0xdf359f8d, 0x9b992f2e, 0xe60b6f47, 0x0fe3f11d,
+                       0xe54cda54, 0x1edad891, 0xce6279cf, 0xcd3e7e6f,
+                       0x1618b166, 0xfd2c1d05, 0x848fd2c5, 0xf6fb2299,
+                       0xf523f357, 0xa6327623, 0x93a83531, 0x56cccd02,
+                       0xacf08162, 0x5a75ebb5, 0x6e163697, 0x88d273cc,
+                       0xde966292, 0x81b949d0, 0x4c50901b, 0x71c65614,
+                       0xe6c6c7bd, 0x327a140a, 0x45e1d006, 0xc3f27b9a,
+                       0xc9aa53fd, 0x62a80f00, 0xbb25bfe2, 0x35bdd2f6,
+                       0x71126905, 0xb2040222, 0xb6cbcf7c, 0xcd769c2b,
+                       0x53113ec0, 0x1640e3d3, 0x38abbd60, 0x2547adf0,
+                       0xba38209c, 0xf746ce76, 0x77afa1c5, 0x20756060,
+                       0x85cbfe4e, 0x8ae88dd8, 0x7aaaf9b0, 0x4cf9aa7e,
+                       0x1948c25c, 0x02fb8a8c, 0x01c36ae4, 0xd6ebe1f9,
+                       0x90d4f869, 0xa65cdea0, 0x3f09252d, 0xc208e69f,
+                       0xb74e6132, 0xce77e25b, 0x578fdfe3, 0x3ac372e6}
+       },
+       {
+               0x243f6a88, 0x85a308d3, 0x13198a2e, 0x03707344,
+               0xa4093822, 0x299f31d0, 0x082efa98, 0xec4e6c89,
+               0x452821e6, 0x38d01377, 0xbe5466cf, 0x34e90c6c,
+               0xc0ac29b7, 0xc97c50dd, 0x3f84d5b5, 0xb5470917,
+               0x9216d5d9, 0x8979fb1b
+       } };
+
+       *c = bf_initstate;
+
+}
+
+uint32_t
+Blowfish_stream2word(const uint8_t *data, uint16_t databytes,
+    uint16_t *current)
+{
+       uint8_t i;
+       uint16_t j;
+       uint32_t temp;
+
+       temp = 0x00000000;
+       j = *current;
+
+       for (i = 0; i < 4; i++, j++) {
+               if (j >= databytes)
+                       j = 0;
+               temp = (temp << 8) | data[j];
+       }
+
+       *current = j;
+       return temp;
+}
+
+void
+Blowfish_expand0state(blf_ctx *c, const uint8_t *key, uint16_t keybytes)
+{
+       uint16_t i;
+       uint16_t j;
+       uint16_t k;
+       uint32_t temp;
+       uint32_t datal;
+       uint32_t datar;
+
+       j = 0;
+       for (i = 0; i < BLF_N + 2; i++) {
+               /* Extract 4 int8 to 1 int32 from keystream */
+               temp = Blowfish_stream2word(key, keybytes, &j);
+               c->P[i] = c->P[i] ^ temp;
+       }
+
+       j = 0;
+       datal = 0x00000000;
+       datar = 0x00000000;
+       for (i = 0; i < BLF_N + 2; i += 2) {
+               Blowfish_encipher(c, &datal, &datar);
+
+               c->P[i] = datal;
+               c->P[i + 1] = datar;
+       }
+
+       for (i = 0; i < 4; i++) {
+               for (k = 0; k < 256; k += 2) {
+                       Blowfish_encipher(c, &datal, &datar);
+
+                       c->S[i][k] = datal;
+                       c->S[i][k + 1] = datar;
+               }
+       }
+}
+
+void
+Blowfish_expandstate(blf_ctx *c, const uint8_t *data, uint16_t databytes,
+    const uint8_t *key, uint16_t keybytes)
+{
+       uint16_t i;
+       uint16_t j;
+       uint16_t k;
+       uint32_t temp;
+       uint32_t datal;
+       uint32_t datar;
+
+       j = 0;
+       for (i = 0; i < BLF_N + 2; i++) {
+               /* Extract 4 int8 to 1 int32 from keystream */
+               temp = Blowfish_stream2word(key, keybytes, &j);
+               c->P[i] = c->P[i] ^ temp;
+       }
+
+       j = 0;
+       datal = 0x00000000;
+       datar = 0x00000000;
+       for (i = 0; i < BLF_N + 2; i += 2) {
+               datal ^= Blowfish_stream2word(data, databytes, &j);
+               datar ^= Blowfish_stream2word(data, databytes, &j);
+               Blowfish_encipher(c, &datal, &datar);
+
+               c->P[i] = datal;
+               c->P[i + 1] = datar;
+       }
+
+       for (i = 0; i < 4; i++) {
+               for (k = 0; k < 256; k += 2) {
+                       datal ^= Blowfish_stream2word(data, databytes, &j);
+                       datar ^= Blowfish_stream2word(data, databytes, &j);
+                       Blowfish_encipher(c, &datal, &datar);
+
+                       c->S[i][k] = datal;
+                       c->S[i][k + 1] = datar;
+               }
+       }
+
+}
+
+void
+blf_enc(blf_ctx *c, uint32_t *data, uint16_t blocks)
+{
+       uint32_t *d;
+       uint16_t i;
+
+       d = data;
+       for (i = 0; i < blocks; i++) {
+               Blowfish_encipher(c, d, d + 1);
+               d += 2;
+       }
+}
+
+/* This password hashing algorithm was designed by David Mazieres
+ * <dm@lcs.mit.edu> and works as follows:
+ *
+ * 1. state := InitState ()
+ * 2. state := ExpandKey (state, salt, password) 3.
+ * REPEAT rounds:
+ *     state := ExpandKey (state, 0, salt)
+ *      state := ExpandKey(state, 0, password)
+ * 4. ctext := "OrpheanBeholderScryDoubt"
+ * 5. REPEAT 64:
+ *     ctext := Encrypt_ECB (state, ctext);
+ * 6. RETURN Concatenate (salt, ctext);
+ *
+ */
+
+/*
+ * FreeBSD implementation by Paul Herman
+ */
+/* This implementation is adaptable to current computing power.
+ * You can have up to 2^31 rounds which should be enough for some
+ * time to come.
+ */
+
+#define BCRYPT_VERSION '2'
+#define BCRYPT_MAXSALT 16      /* Precomputation is just so nice */
+#define BCRYPT_BLOCKS 6                /* Ciphertext blocks */
+#define BCRYPT_MINROUNDS 16    /* we have log2(rounds) in salt */
+
+static void encode_base64(uint8_t *, uint8_t *, uint16_t);
+static void decode_base64(uint8_t *, uint16_t, const uint8_t *);
+
+static char    encrypted[512]; /* Shouldn't grow more than this */
+static char    error[] = ":";
+
+static const uint8_t Base64Code[] =
+"./ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
+
+static const uint8_t index_64[128] =
+{
+       255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+       255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+       255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+       255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+       255, 255, 255, 255, 255, 255, 0, 1, 54, 55,
+       56, 57, 58, 59, 60, 61, 62, 63, 255, 255,
+       255, 255, 255, 255, 255, 2, 3, 4, 5, 6,
+       7, 8, 9, 10, 11, 12, 13, 14, 15, 16,
+       17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27,
+       255, 255, 255, 255, 255, 255, 28, 29, 30,
+       31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
+       41, 42, 43, 44, 45, 46, 47, 48, 49, 50,
+       51, 52, 53, 255, 255, 255, 255, 255
+};
+#define CHAR64(c)  ( (c) > 127 ? 255 : index_64[(c)])
+
+static void
+decode_base64(uint8_t *buffer, uint16_t len, const uint8_t *data)
+{
+       uint8_t *bp = buffer;
+       const uint8_t *p = data;
+       uint8_t c1, c2, c3, c4;
+       while (bp < buffer + len) {
+               c1 = CHAR64(*p);
+               c2 = CHAR64(*(p + 1));
+
+               /* Invalid data */
+               if (c1 == 255 || c2 == 255)
+                       break;
+
+               *bp++ = (uint8_t)((c1 << 2) | ((c2 & 0x30) >> 4));
+               if (bp >= buffer + len)
+                       break;
+
+               c3 = CHAR64(*(p + 2));
+               if (c3 == 255)
+                       break;
+
+               *bp++ = ((c2 & 0x0f) << 4) | ((c3 & 0x3c) >> 2);
+               if (bp >= buffer + len)
+                       break;
+
+               c4 = CHAR64(*(p + 3));
+               if (c4 == 255)
+                       break;
+               *bp++ = ((c3 & 0x03) << 6) | c4;
+
+               p += 4;
+       }
+}
+
+/* We handle $Vers$log2(NumRounds)$salt+passwd$
+   i.e. $2$04$iwouldntknowwhattosayetKdJ6iFtacBqJdKe6aW7ou */
+
+char *
+rb_blowfish_crypt(const char *key, const char *salt)
+{
+       blf_ctx state;
+       uint32_t rounds, i, k;
+       uint16_t j;
+       uint8_t key_len, salt_len, logr, minr;
+       uint8_t ciphertext[4 * BCRYPT_BLOCKS] = "OrpheanBeholderScryDoubt";
+       uint8_t csalt[BCRYPT_MAXSALT];
+       uint32_t cdata[BCRYPT_BLOCKS];
+       static const char *magic = "$2a$04$";
+
+               /* Defaults */
+       minr = 'a';
+       logr = 4;
+       rounds = 1 << logr;
+
+        /* If it starts with the magic string, then skip that */
+       if(!strncmp(salt, magic, strlen(magic))) {
+               salt += strlen(magic);
+       }
+       else if (*salt == '$') {
+
+               /* Discard "$" identifier */
+               salt++;
+
+               if (*salt > BCRYPT_VERSION) {
+                       /* How do I handle errors ? Return ':' */
+                       return error;
+               }
+
+               /* Check for minor versions */
+               if (salt[1] != '$') {
+                        switch (salt[1]) {
+                        case 'a':
+                                /* 'ab' should not yield the same as 'abab' */
+                                minr = (uint8_t)salt[1];
+                                salt++;
+                                break;
+                        default:
+                                return error;
+                        }
+               } else
+                        minr = 0;
+
+               /* Discard version + "$" identifier */
+               salt += 2;
+
+               if (salt[2] != '$')
+                       /* Out of sync with passwd entry */
+                       return error;
+
+               /* Computer power doesnt increase linear, 2^x should be fine */
+               logr = (uint8_t)atoi(salt);
+               rounds = 1 << logr;
+               if (rounds < BCRYPT_MINROUNDS)
+                       return error;
+
+               /* Discard num rounds + "$" identifier */
+               salt += 3;
+       }
+
+
+       /* We dont want the base64 salt but the raw data */
+       decode_base64(csalt, BCRYPT_MAXSALT, (const uint8_t *)salt);
+       salt_len = BCRYPT_MAXSALT;
+       key_len = (uint8_t)(strlen(key) + (minr >= 'a' ? 1 : 0));
+
+       /* Setting up S-Boxes and Subkeys */
+       Blowfish_initstate(&state);
+       Blowfish_expandstate(&state, csalt, salt_len,
+           (const uint8_t *) key, key_len);
+       for (k = 0; k < rounds; k++) {
+               Blowfish_expand0state(&state, (const uint8_t *) key, key_len);
+               Blowfish_expand0state(&state, csalt, salt_len);
+       }
+
+       /* This can be precomputed later */
+       j = 0;
+       for (i = 0; i < BCRYPT_BLOCKS; i++)
+               cdata[i] = Blowfish_stream2word(ciphertext, 4 * BCRYPT_BLOCKS, &j);
+
+       /* Now do the encryption */
+       for (k = 0; k < 64; k++)
+               blf_enc(&state, cdata, BCRYPT_BLOCKS / 2);
+
+       for (i = 0; i < BCRYPT_BLOCKS; i++) {
+               ciphertext[4 * i + 3] = cdata[i] & 0xff;
+               cdata[i] = cdata[i] >> 8;
+               ciphertext[4 * i + 2] = cdata[i] & 0xff;
+               cdata[i] = cdata[i] >> 8;
+               ciphertext[4 * i + 1] = cdata[i] & 0xff;
+               cdata[i] = cdata[i] >> 8;
+               ciphertext[4 * i + 0] = cdata[i] & 0xff;
+       }
+
+
+       i = 0;
+       encrypted[i++] = '$';
+       encrypted[i++] = BCRYPT_VERSION;
+       if (minr)
+               encrypted[i++] = (int8_t)minr;
+       encrypted[i++] = '$';
+
+       snprintf(encrypted + i, 4, "%2.2u$", logr);
+
+       encode_base64((uint8_t *) encrypted + i + 3, csalt, BCRYPT_MAXSALT);
+       encode_base64((uint8_t *) encrypted + strlen(encrypted), ciphertext,
+           4 * BCRYPT_BLOCKS - 1);
+       return encrypted;
+}
+
+static void
+encode_base64(uint8_t *buffer, uint8_t *data, uint16_t len)
+{
+       uint8_t *bp = buffer;
+       uint8_t *p = data;
+       uint8_t c1, c2;
+       while (p < data + len) {
+               c1 = *p++;
+               *bp++ = Base64Code[(c1 >> 2)];
+               c1 = (c1 & 0x03) << 4;
+               if (p >= data + len) {
+                       *bp++ = Base64Code[c1];
+                       break;
+               }
+               c2 = *p++;
+               c1 |= (c2 >> 4) & 0x0f;
+               *bp++ = Base64Code[c1];
+               c1 = (c2 & 0x0f) << 2;
+               if (p >= data + len) {
+                       *bp++ = Base64Code[c1];
+                       break;
+               }
+               c2 = *p++;
+               c1 |= (c2 >> 6) & 0x03;
+               *bp++ = Base64Code[c1];
+               *bp++ = Base64Code[c2 & 0x3f];
+       }
+       *bp = '\0';
+}