X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;ds=sidebyside;f=lib%2Fgc-libgcrypt.c;h=a9e6279a2a690b12f674ee3affa49ea806a17878;hb=74fcb0575a5b053a1b1078a5595c1795790c63cb;hp=a7d2c17d9ffe7b8592c5f975c6f1eecc4d23d553;hpb=1ded427a5e0dba47b32257e484a29418cf789653;p=gnulib.git diff --git a/lib/gc-libgcrypt.c b/lib/gc-libgcrypt.c index a7d2c17d9..a9e6279a2 100644 --- a/lib/gc-libgcrypt.c +++ b/lib/gc-libgcrypt.c @@ -1,5 +1,5 @@ /* gc-libgcrypt.c --- Crypto wrappers around Libgcrypt for GC. - * Copyright (C) 2002, 2003, 2004, 2005 Simon Josefsson + * Copyright (C) 2002, 2003, 2004, 2005, 2006 Simon Josefsson * * This file is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published @@ -27,8 +27,14 @@ /* Get prototype. */ #include "gc.h" +#include +#include + /* Get libgcrypt API. */ #include +#ifdef GC_USE_MD2 +# include "md2.h" +#endif #include @@ -59,6 +65,8 @@ gc_done (void) return; } +#ifdef GC_USE_RANDOM + /* Randomness. */ Gc_rc @@ -82,6 +90,8 @@ gc_random (char *data, size_t datalen) return GC_OK; } +#endif + /* Memory allocation. */ void @@ -140,6 +150,10 @@ gc_cipher_open (Gc_cipher alg, Gc_cipher_mode mode, switch (mode) { + case GC_ECB: + gcrymode = GCRY_CIPHER_MODE_ECB; + break; + case GC_CBC: gcrymode = GCRY_CIPHER_MODE_CBC; break; @@ -214,6 +228,201 @@ gc_cipher_close (gc_cipher_handle handle) /* Hashes. */ +typedef struct _gc_hash_ctx { + Gc_hash alg; + Gc_hash_mode mode; + gcry_md_hd_t gch; +#ifdef GC_USE_MD2 + char hash[GC_MD2_DIGEST_SIZE]; + struct md2_ctx md2Context; +#endif +} _gc_hash_ctx; + +Gc_rc +gc_hash_open (Gc_hash hash, Gc_hash_mode mode, gc_hash_handle * outhandle) +{ + _gc_hash_ctx *ctx; + int gcryalg, gcrymode; + gcry_error_t err; + Gc_rc rc = GC_OK; + + ctx = calloc (sizeof (*ctx), 1); + if (!ctx) + return GC_MALLOC_ERROR; + + ctx->alg = hash; + ctx->mode = mode; + + switch (hash) + { + case GC_MD2: + gcryalg = GCRY_MD_NONE; + break; + + case GC_MD4: + gcryalg = GCRY_MD_MD4; + break; + + case GC_MD5: + gcryalg = GCRY_MD_MD5; + break; + + case GC_SHA1: + gcryalg = GCRY_MD_SHA1; + break; + + case GC_RMD160: + gcryalg = GCRY_MD_RMD160; + break; + + default: + rc = GC_INVALID_HASH; + } + + switch (mode) + { + case 0: + gcrymode = 0; + break; + + case GC_HMAC: + gcrymode = GCRY_MD_FLAG_HMAC; + break; + + default: + rc = GC_INVALID_HASH; + } + + if (rc == GC_OK && gcryalg != GCRY_MD_NONE) + { + err = gcry_md_open (&ctx->gch, gcryalg, gcrymode); + if (gcry_err_code (err)) + rc = GC_INVALID_HASH; + } + + if (rc == GC_OK) + *outhandle = ctx; + else + free (ctx); + + return rc; +} + +Gc_rc +gc_hash_clone (gc_hash_handle handle, gc_hash_handle * outhandle) +{ + _gc_hash_ctx *in = handle; + _gc_hash_ctx *out; + int err; + + *outhandle = out = calloc (sizeof (*out), 1); + if (!out) + return GC_MALLOC_ERROR; + + memcpy (out, in, sizeof (*out)); + + err = gcry_md_copy (&out->gch, in->gch); + if (err) + { + free (out); + return GC_INVALID_HASH; + } + + return GC_OK; +} + +size_t +gc_hash_digest_length (Gc_hash hash) +{ + size_t len; + + switch (hash) + { + case GC_MD2: + len = GC_MD2_DIGEST_SIZE; + break; + + case GC_MD4: + len = GC_MD4_DIGEST_SIZE; + break; + + case GC_MD5: + len = GC_MD5_DIGEST_SIZE; + break; + + case GC_RMD160: + len = GC_RMD160_DIGEST_SIZE; + break; + + case GC_SHA1: + len = GC_SHA1_DIGEST_SIZE; + break; + + default: + return 0; + } + + return len; +} + +void +gc_hash_hmac_setkey (gc_hash_handle handle, size_t len, const char *key) +{ + _gc_hash_ctx *ctx = handle; +#ifdef GC_USE_MD2 + if (ctx->alg != GC_MD2) +#endif + gcry_md_setkey (ctx->gch, key, len); +} + +void +gc_hash_write (gc_hash_handle handle, size_t len, const char *data) +{ + _gc_hash_ctx *ctx = handle; + +#ifdef GC_USE_MD2 + if (ctx->alg == GC_MD2) + md2_process_bytes (data, len, &ctx->md2Context); + else +#endif + gcry_md_write (ctx->gch, data, len); +} + +const char * +gc_hash_read (gc_hash_handle handle) +{ + _gc_hash_ctx *ctx = handle; + const char *digest; + +#ifdef GC_USE_MD2 + if (ctx->alg == GC_MD2) + { + md2_finish_ctx (&ctx->md2Context, ctx->hash); + digest = ctx->hash; + } + else +#endif + { + gcry_md_final (ctx->gch); + digest = gcry_md_read (ctx->gch, 0); + } + + return digest; +} + +void +gc_hash_close (gc_hash_handle handle) +{ + _gc_hash_ctx *ctx = handle; + +#ifdef GC_USE_MD2 + if (ctx->alg != GC_MD2) +#endif + gcry_md_close (ctx->gch); + + free (ctx); +} + Gc_rc gc_hash_buffer (Gc_hash hash, const void *in, size_t inlen, char *resbuf) { @@ -221,6 +430,19 @@ gc_hash_buffer (Gc_hash hash, const void *in, size_t inlen, char *resbuf) switch (hash) { +#ifdef GC_USE_MD2 + case GC_MD2: + md2_buffer (in, inlen, resbuf); + return GC_OK; + break; +#endif + +#ifdef GC_USE_MD4 + case GC_MD4: + gcryalg = GCRY_MD_MD4; + break; +#endif + #ifdef GC_USE_MD5 case GC_MD5: gcryalg = GCRY_MD_MD5; @@ -233,6 +455,12 @@ gc_hash_buffer (Gc_hash hash, const void *in, size_t inlen, char *resbuf) break; #endif +#ifdef GC_USE_RMD160 + case GC_RMD160: + gcryalg = GCRY_MD_RMD160; + break; +#endif + default: return GC_INVALID_HASH; } @@ -244,6 +472,47 @@ gc_hash_buffer (Gc_hash hash, const void *in, size_t inlen, char *resbuf) /* One-call interface. */ +#ifdef GC_USE_MD2 +Gc_rc +gc_md2 (const void *in, size_t inlen, void *resbuf) +{ + md2_buffer (in, inlen, resbuf); + return GC_OK; +} +#endif + +#ifdef GC_USE_MD4 +Gc_rc +gc_md4 (const void *in, size_t inlen, void *resbuf) +{ + size_t outlen = gcry_md_get_algo_dlen (GCRY_MD_MD4); + gcry_md_hd_t hd; + gpg_error_t err; + unsigned char *p; + + assert (outlen == GC_MD4_DIGEST_SIZE); + + err = gcry_md_open (&hd, GCRY_MD_MD4, 0); + if (err != GPG_ERR_NO_ERROR) + return GC_INVALID_HASH; + + gcry_md_write (hd, in, inlen); + + p = gcry_md_read (hd, GCRY_MD_MD4); + if (p == NULL) + { + gcry_md_close (hd); + return GC_INVALID_HASH; + } + + memcpy (resbuf, p, outlen); + + gcry_md_close (hd); + + return GC_OK; +} +#endif + #ifdef GC_USE_MD5 Gc_rc gc_md5 (const void *in, size_t inlen, void *resbuf) @@ -358,7 +627,7 @@ gc_hmac_sha1 (const void *key, size_t keylen, unsigned char *hash; gpg_error_t err; - assert (hlen == 16); + assert (hlen == GC_SHA1_DIGEST_SIZE); err = gcry_md_open (&mdh, GCRY_MD_SHA1, GCRY_MD_FLAG_HMAC); if (err != GPG_ERR_NO_ERROR)