Add new function, EVP_MD_CTX_copy() to replace frequent use of memcpy.

Submitted by: Eric A Young - from changes to C2Net SSLeay
Reviewed by: Mark Cox
PR:

1 files changed, 10 insertions, 0 deletions

diff --git a/crypto/evp/digest.c b/crypto/evp/digest.c
index d65f0036f7..7ef0e73b5a 100644
--- a/crypto/evp/digest.c
+++ b/crypto/evp/digest.c
@@ -87,3 +87,13 @@ unsigned int *size;
 		*size=ctx->digest->md_size;
 	memset(&(ctx->md),0,sizeof(ctx->md));
 	}
+
+int EVP_MD_CTX_copy(EVP_MD_CTX *out, EVP_MD_CTX *in)
+{
+    if ((in == NULL) || (in->digest == NULL)) {
+        EVPerr(EVP_F_EVP_MD_CTX_COPY,EVP_R_INPUT_NOT_INITALISED);
+	return 0;
+    }
+    memcpy((char *)out,(char *)in,in->digest->ctx_size);
+    return 1;
+}