1 files changed, 20 insertions, 16 deletions

diff --git a/digest-openssl.c b/digest-openssl.c
index 863d37d0..de038013 100644
--- a/digest-openssl.c
+++ b/digest-openssl.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: digest-openssl.c,v 1.2 2014/02/02 03:44:31 djm Exp $ */
+/* $OpenBSD: digest-openssl.c,v 1.3 2014/06/24 01:13:21 djm Exp $ */
 /*
  * Copyright (c) 2013 Damien Miller <djm@mindrot.org>
  *
@@ -26,8 +26,9 @@
 
 #include "openbsd-compat/openssl-compat.h"
 
-#include "buffer.h"
+#include "sshbuf.h"
 #include "digest.h"
+#include "ssherr.h"
 
 struct ssh_digest_ctx {
 	int alg;
@@ -98,9 +99,11 @@ ssh_digest_start(int alg)
 int
 ssh_digest_copy_state(struct ssh_digest_ctx *from, struct ssh_digest_ctx *to)
 {
+	if (from->alg != to->alg)
+		return SSH_ERR_INVALID_ARGUMENT;
 	/* we have bcopy-style order while openssl has memcpy-style */
 	if (!EVP_MD_CTX_copy_ex(&to->mdctx, &from->mdctx))
-		return -1;
+		return SSH_ERR_LIBCRYPTO_ERROR;
 	return 0;
 }
 
@@ -108,14 +111,14 @@ int
 ssh_digest_update(struct ssh_digest_ctx *ctx, const void *m, size_t mlen)
 {
 	if (EVP_DigestUpdate(&ctx->mdctx, m, mlen) != 1)
-		return -1;
+		return SSH_ERR_LIBCRYPTO_ERROR;
 	return 0;
 }
 
 int
-ssh_digest_update_buffer(struct ssh_digest_ctx *ctx, const Buffer *b)
+ssh_digest_update_buffer(struct ssh_digest_ctx *ctx, const struct sshbuf *b)
 {
-	return ssh_digest_update(ctx, buffer_ptr(b), buffer_len(b));
+	return ssh_digest_update(ctx, sshbuf_ptr(b), sshbuf_len(b));
 }
 
 int
@@ -125,13 +128,13 @@ ssh_digest_final(struct ssh_digest_ctx *ctx, u_char *d, size_t dlen)
 	u_int l = dlen;
 
 	if (dlen > UINT_MAX)
-		return -1;
+		return SSH_ERR_INVALID_ARGUMENT;
 	if (dlen < digest->digest_len) /* No truncation allowed */
-		return -1;
+		return SSH_ERR_INVALID_ARGUMENT;
 	if (EVP_DigestFinal_ex(&ctx->mdctx, d, &l) != 1)
-		return -1;
+		return SSH_ERR_LIBCRYPTO_ERROR;
 	if (l != digest->digest_len) /* sanity */
-		return -1;
+		return SSH_ERR_INTERNAL_ERROR;
 	return 0;
 }
 
@@ -149,18 +152,19 @@ int
 ssh_digest_memory(int alg, const void *m, size_t mlen, u_char *d, size_t dlen)
 {
 	struct ssh_digest_ctx *ctx = ssh_digest_start(alg);
+	int r;
 
 	if (ctx == NULL)
-		return -1;
-	if (ssh_digest_update(ctx, m, mlen) != 0 ||
-	    ssh_digest_final(ctx, d, dlen) != 0)
-		return -1;
+		return SSH_ERR_INVALID_ARGUMENT;
+	if ((r = ssh_digest_update(ctx, m, mlen) != 0) ||
+	    (r = ssh_digest_final(ctx, d, dlen) != 0))
+		return r;
 	ssh_digest_free(ctx);
 	return 0;
 }
 
 int
-ssh_digest_buffer(int alg, const Buffer *b, u_char *d, size_t dlen)
+ssh_digest_buffer(int alg, const struct sshbuf *b, u_char *d, size_t dlen)
 {
-	return ssh_digest_memory(alg, buffer_ptr(b), buffer_len(b), d, dlen);
+	return ssh_digest_memory(alg, sshbuf_ptr(b), sshbuf_len(b), d, dlen);
 }