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Diffstat (limited to 'src/libgcrypt.c')
-rw-r--r--src/libgcrypt.c63
1 files changed, 60 insertions, 3 deletions
diff --git a/src/libgcrypt.c b/src/libgcrypt.c
index f8fe96f2..2e2695c8 100644
--- a/src/libgcrypt.c
+++ b/src/libgcrypt.c
@@ -31,6 +31,10 @@
#ifdef HAVE_LIBGCRYPT
#include <gcrypt.h>
+struct ssh_mac_ctx_struct {
+ enum ssh_mac_e mac_type;
+ gcry_md_hd_t ctx;
+};
static int alloc_key(struct crypto_struct *cipher) {
cipher->key = malloc(cipher->keylen);
@@ -62,6 +66,10 @@ void sha1(unsigned char *digest, int len, unsigned char *hash) {
gcry_md_hash_buffer(GCRY_MD_SHA1, hash, digest, len);
}
+void sha256(unsigned char *digest, int len, unsigned char *hash){
+ gcry_md_hash_buffer(GCRY_MD_SHA256, hash, digest, len);
+}
+
MD5CTX md5_init(void) {
MD5CTX c = NULL;
gcry_md_open(&c, GCRY_MD_MD5, 0);
@@ -79,14 +87,63 @@ void md5_final(unsigned char *md, MD5CTX c) {
gcry_md_close(c);
}
-HMACCTX hmac_init(const void *key, int len, int type) {
+ssh_mac_ctx ssh_mac_ctx_init(enum ssh_mac_e type){
+ ssh_mac_ctx ctx=malloc(sizeof(struct ssh_mac_ctx_struct));
+ ctx->mac_type=type;
+ switch(type){
+ case SSH_MAC_SHA1:
+ gcry_md_open(&ctx->ctx, GCRY_MD_SHA1, 0);
+ break;
+ case SSH_MAC_SHA256:
+ gcry_md_open(&ctx->ctx, GCRY_MD_SHA256, 0);
+ break;
+ case SSH_MAC_SHA384:
+ gcry_md_open(&ctx->ctx, GCRY_MD_SHA384, 0);
+ break;
+ case SSH_MAC_SHA512:
+ gcry_md_open(&ctx->ctx, GCRY_MD_SHA512, 0);
+ break;
+ default:
+ SAFE_FREE(ctx);
+ return NULL;
+ }
+ return ctx;
+}
+
+void ssh_mac_update(ssh_mac_ctx ctx, const void *data, unsigned long len) {
+ gcry_md_write(ctx->ctx,data,len);
+}
+
+void ssh_mac_final(unsigned char *md, ssh_mac_ctx ctx) {
+ size_t len;
+ switch(ctx->mac_type){
+ case SSH_MAC_SHA1:
+ len=SHA_DIGEST_LEN;
+ break;
+ case SSH_MAC_SHA256:
+ len=SHA256_DIGEST_LENGTH;
+ break;
+ case SSH_MAC_SHA384:
+ len=SHA384_DIGEST_LENGTH;
+ break;
+ case SSH_MAC_SHA512:
+ len=SHA512_DIGEST_LENGTH;
+ break;
+ }
+ gcry_md_final(ctx->ctx);
+ memcpy(md, gcry_md_read(ctx->ctx, 0), len);
+ gcry_md_close(ctx->ctx);
+ SAFE_FREE(ctx);
+}
+
+HMACCTX hmac_init(const void *key, int len, enum ssh_hmac_e type) {
HMACCTX c = NULL;
switch(type) {
- case HMAC_SHA1:
+ case SSH_HMAC_SHA1:
gcry_md_open(&c, GCRY_MD_SHA1, GCRY_MD_FLAG_HMAC);
break;
- case HMAC_MD5:
+ case SSH_HMAC_MD5:
gcry_md_open(&c, GCRY_MD_MD5, GCRY_MD_FLAG_HMAC);
break;
default: