On Mon, Mar 30, 2009 at 10:39:56AM -0400, Carter Browne wrote:
> Since it is a fixed size (20 bytes) a define would be appropriate, e.g.
>
> #define SHA1_KEY_SIZE 20
>
The EVP message digest interface includes functions to get the digest
size for a given digest algorithm.
int size = EVP_MD_size(EVP_sha1());
int size = EVP_MD_size(EVP_get_digestbyname("sha1"));
EVP_MD_CTX md_ctx;
EVP_DigestInit(&md_ctx, EVP_sha1());
int size = EVP_MD_CTX_size(&md_ctx);
...
--
Viktor.
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