#include <fcntl.h>
#include <errno.h>
+/* Hashes. */
+#ifdef GC_USE_MD4
+# include "md4.h"
+#endif
#ifdef GC_USE_MD5
# include "md5.h"
#endif
+#ifdef GC_USE_SHA1
+# include "sha1.h"
+#endif
#ifdef GC_USE_HMAC_MD5
# include "hmac.h"
#endif
-int
+/* Ciphers. */
+#ifdef GC_USE_ARCFOUR
+# include "arcfour.h"
+#endif
+#ifdef GC_USE_ARCTWO
+# include "arctwo.h"
+#endif
+#ifdef GC_USE_DES
+# include "des.h"
+#endif
+#ifdef GC_USE_RIJNDAEL
+# include "rijndael-api-fst.h"
+#endif
+
+Gc_rc
gc_init (void)
{
- return 0;
+ return GC_OK;
}
void
/* Randomness. */
-static int
+static Gc_rc
randomize (int level, char *data, size_t datalen)
{
int fd;
return GC_OK;
}
-int
+Gc_rc
gc_nonce (char *data, size_t datalen)
{
return randomize (0, data, datalen);
}
-int
+Gc_rc
gc_pseudo_random (char *data, size_t datalen)
{
return randomize (1, data, datalen);
}
-int
+Gc_rc
gc_random (char *data, size_t datalen)
{
return randomize (2, data, datalen);
{
return;
}
+/* Ciphers. */
+
+typedef struct _gc_cipher_ctx {
+ Gc_cipher alg;
+ Gc_cipher_mode mode;
+#ifdef GC_USE_ARCTWO
+ arctwo_context arctwoContext;
+#endif
+#ifdef GC_USE_ARCFOUR
+ arcfour_context arcfourContext;
+#endif
+#ifdef GC_USE_DES
+ des_ctx desContext;
+#endif
+#ifdef GC_USE_RIJNDAEL
+ rijndaelKeyInstance aesEncKey;
+ rijndaelKeyInstance aesDecKey;
+ rijndaelCipherInstance aesContext;
+#endif
+} _gc_cipher_ctx;
+
+Gc_rc
+gc_cipher_open (Gc_cipher alg, Gc_cipher_mode mode,
+ gc_cipher_handle * outhandle)
+{
+ _gc_cipher_ctx *ctx;
+ Gc_rc rc = GC_OK;
+
+ ctx = calloc (sizeof (*ctx), 1);
+
+ ctx->alg = alg;
+ ctx->mode = mode;
+
+ switch (alg)
+ {
+#ifdef GC_USE_ARCTWO
+ case GC_ARCTWO40:
+ switch (mode)
+ {
+ case GC_ECB:
+ break;
+
+ default:
+ rc = GC_INVALID_CIPHER;
+ }
+ break;
+#endif
+
+#ifdef GC_USE_ARCFOUR
+ case GC_ARCFOUR128:
+ case GC_ARCFOUR40:
+ switch (mode)
+ {
+ case GC_STREAM:
+ break;
+
+ default:
+ rc = GC_INVALID_CIPHER;
+ }
+ break;
+#endif
+
+#ifdef GC_USE_DES
+ case GC_DES:
+ switch (mode)
+ {
+ case GC_ECB:
+ break;
+
+ default:
+ rc = GC_INVALID_CIPHER;
+ }
+ break;
+#endif
+
+#ifdef GC_USE_RIJNDAEL
+ case GC_AES128:
+ case GC_AES192:
+ case GC_AES256:
+ switch (mode)
+ {
+ case GC_ECB:
+ case GC_CBC:
+ break;
+
+ default:
+ rc = GC_INVALID_CIPHER;
+ }
+ break;
+#endif
+
+ default:
+ rc = GC_INVALID_CIPHER;
+ }
+
+ if (rc == GC_OK)
+ *outhandle = ctx;
+ else
+ free (ctx);
+
+ return rc;
+}
+
+Gc_rc
+gc_cipher_setkey (gc_cipher_handle handle, size_t keylen, const char *key)
+{
+ _gc_cipher_ctx *ctx = handle;
+
+ switch (ctx->alg)
+ {
+#ifdef GC_USE_ARCTWO
+ case GC_ARCTWO40:
+ arctwo_setkey (&ctx->arctwoContext, keylen, key);
+ break;
+#endif
+
+#ifdef GC_USE_ARCFOUR
+ case GC_ARCFOUR128:
+ case GC_ARCFOUR40:
+ arcfour_setkey (&ctx->arcfourContext, key, keylen);
+ break;
+#endif
+
+#ifdef GC_USE_DES
+ case GC_DES:
+ if (keylen != 8)
+ return GC_INVALID_CIPHER;
+ des_setkey (&ctx->desContext, key);
+ break;
+#endif
+
+#ifdef GC_USE_RIJNDAEL
+ case GC_AES128:
+ case GC_AES192:
+ case GC_AES256:
+ {
+ rijndael_rc rc;
+ size_t i;
+ char keyMaterial[RIJNDAEL_MAX_KEY_SIZE + 1];
+
+ for (i = 0; i < keylen; i++)
+ sprintf (&keyMaterial[2*i], "%02x", key[i] & 0xFF);
+
+ rc = rijndaelMakeKey (&ctx->aesEncKey, RIJNDAEL_DIR_ENCRYPT,
+ keylen * 8, keyMaterial);
+ if (rc < 0)
+ return GC_INVALID_CIPHER;
+
+ rc = rijndaelMakeKey (&ctx->aesDecKey, RIJNDAEL_DIR_DECRYPT,
+ keylen * 8, keyMaterial);
+ if (rc < 0)
+ return GC_INVALID_CIPHER;
+
+ rc = rijndaelCipherInit (&ctx->aesContext, RIJNDAEL_MODE_ECB, NULL);
+ if (rc < 0)
+ return GC_INVALID_CIPHER;
+ }
+ break;
+#endif
+
+ default:
+ return GC_INVALID_CIPHER;
+ }
+
+ return GC_OK;
+}
+
+Gc_rc
+gc_cipher_setiv (gc_cipher_handle handle, size_t ivlen, const char *iv)
+{
+ _gc_cipher_ctx *ctx = handle;
+
+ switch (ctx->alg)
+ {
+#ifdef GC_USE_RIJNDAEL
+ case GC_AES128:
+ case GC_AES192:
+ case GC_AES256:
+ switch (ctx->mode)
+ {
+ case GC_ECB:
+ /* Doesn't use IV. */
+ break;
+
+ case GC_CBC:
+ {
+ rijndael_rc rc;
+ size_t i;
+ char ivMaterial[2 * RIJNDAEL_MAX_IV_SIZE + 1];
+
+ for (i = 0; i < ivlen; i++)
+ sprintf (&ivMaterial[2*i], "%02x", iv[i] & 0xFF);
+
+ rc = rijndaelCipherInit (&ctx->aesContext, RIJNDAEL_MODE_CBC,
+ ivMaterial);
+ if (rc < 0)
+ return GC_INVALID_CIPHER;
+ }
+ break;
+
+ default:
+ return GC_INVALID_CIPHER;
+ }
+ break;
+#endif
+
+ default:
+ return GC_INVALID_CIPHER;
+ }
+
+ return GC_OK;
+}
+
+Gc_rc
+gc_cipher_encrypt_inline (gc_cipher_handle handle, size_t len, char *data)
+{
+ _gc_cipher_ctx *ctx = handle;
+
+ switch (ctx->alg)
+ {
+#ifdef GC_USE_ARCTWO
+ case GC_ARCTWO40:
+ arctwo_encrypt (&ctx->arctwoContext, data, data, len);
+ break;
+#endif
+
+#ifdef GC_USE_ARCFOUR
+ case GC_ARCFOUR128:
+ case GC_ARCFOUR40:
+ arcfour_stream (&ctx->arcfourContext, data, data, len);
+ break;
+#endif
+
+#ifdef GC_USE_DES
+ case GC_DES:
+ for (; len >= 8; len -= 8, data += 8)
+ des_ecb_encrypt (&ctx->desContext, data, data);
+ break;
+#endif
+
+#ifdef GC_USE_RIJNDAEL
+ case GC_AES128:
+ case GC_AES192:
+ case GC_AES256:
+ {
+ int nblocks;
+
+ nblocks = rijndaelBlockEncrypt (&ctx->aesContext, &ctx->aesEncKey,
+ data, 8 * len, data);
+ if (nblocks < 0)
+ return GC_INVALID_CIPHER;
+ }
+ break;
+#endif
+
+ default:
+ return GC_INVALID_CIPHER;
+ }
+
+ return GC_OK;
+}
+
+Gc_rc
+gc_cipher_decrypt_inline (gc_cipher_handle handle, size_t len, char *data)
+{
+ _gc_cipher_ctx *ctx = handle;
+
+ switch (ctx->alg)
+ {
+#ifdef GC_USE_ARCTWO
+ case GC_ARCTWO40:
+ arctwo_decrypt (&ctx->arctwoContext, data, data, len);
+ break;
+#endif
+
+#ifdef GC_USE_ARCFOUR
+ case GC_ARCFOUR128:
+ case GC_ARCFOUR40:
+ arcfour_stream (&ctx->arcfourContext, data, data, len);
+ break;
+#endif
+
+#ifdef GC_USE_DES
+ case GC_DES:
+ for (; len >= 8; len -= 8, data += 8)
+ des_ecb_decrypt (&ctx->desContext, data, data);
+ break;
+#endif
+
+#ifdef GC_USE_RIJNDAEL
+ case GC_AES128:
+ case GC_AES192:
+ case GC_AES256:
+ {
+ int nblocks;
+
+ nblocks = rijndaelBlockDecrypt (&ctx->aesContext, &ctx->aesDecKey,
+ data, 8 * len, data);
+ if (nblocks < 0)
+ return GC_INVALID_CIPHER;
+ }
+ break;
+#endif
+
+ default:
+ return GC_INVALID_CIPHER;
+ }
+
+ return GC_OK;
+}
+
+Gc_rc
+gc_cipher_close (gc_cipher_handle handle)
+{
+ _gc_cipher_ctx *ctx = handle;
+
+ if (ctx)
+ free (ctx);
+
+ return GC_OK;
+}
/* Hashes. */
-int
+Gc_rc
gc_hash_buffer (Gc_hash hash, const void *in, size_t inlen, char *resbuf)
{
switch (hash)
{
+#ifdef GC_USE_MD4
+ case GC_MD4:
+ md4_buffer (in, inlen, resbuf);
+ break;
+#endif
+
#ifdef GC_USE_MD5
case GC_MD5:
md5_buffer (in, inlen, resbuf);
break;
#endif
+#ifdef GC_USE_SHA1
+ case GC_SHA1:
+ sha1_buffer (in, inlen, resbuf);
+ break;
+#endif
+
default:
return GC_INVALID_HASH;
}
return GC_OK;
}
+#ifdef GC_USE_MD4
+Gc_rc
+gc_md4 (const void *in, size_t inlen, void *resbuf)
+{
+ md4_buffer (in, inlen, resbuf);
+ return GC_OK;
+}
+#endif
+
#ifdef GC_USE_MD5
-int
+Gc_rc
gc_md5 (const void *in, size_t inlen, void *resbuf)
{
md5_buffer (in, inlen, resbuf);
- return 0;
+ return GC_OK;
+}
+#endif
+
+#ifdef GC_USE_SHA1
+Gc_rc
+gc_sha1 (const void *in, size_t inlen, void *resbuf)
+{
+ sha1_buffer (in, inlen, resbuf);
+ return GC_OK;
}
#endif
#ifdef GC_USE_HMAC_MD5
-int
+Gc_rc
gc_hmac_md5 (const void *key, size_t keylen,
const void *in, size_t inlen, char *resbuf)
{
hmac_md5 (key, keylen, in, inlen, resbuf);
- return 0;
+ return GC_OK;
+}
+#endif
+
+#ifdef GC_USE_HMAC_SHA1
+Gc_rc
+gc_hmac_sha1 (const void *key, size_t keylen,
+ const void *in, size_t inlen, char *resbuf)
+{
+ hmac_sha1 (key, keylen, in, inlen, resbuf);
+ return GC_OK;
}
#endif
projects / gnulib.git / blobdiff