Hi, I'm trying to change the ssh-rsa.c to be fips compliant. So, after some investigation I added the following code to to ssh_rsa_sign function to make it fips compliant.
========================================================================== signing_key = EVP_PKEY_new(); EVP_PKEY_assign_RSA(signing_key, key->rsa); ctx = EVP_PKEY_CTX_new(signing_key, NULL /* no engine */); EVP_PKEY_sign_init(ctx); EVP_PKEY_CTX_set_rsa_padding(ctx, RSA_PKCS1_PADDING); EVP_PKEY_CTX_set_signature_md(ctx, EVP_sha256()); EVP_PKEY_sign(ctx, sig, &slen, digest, sizeof(digest)); ============================================================================ I also, tried changing the code to be as follows: ========================================================================= + + EVP_MD_CTX_init(&mctx); + EVP_SignInit_ex(&mctx, EVP_sha256 (), NULL); + EVP_SignUpdate(&mctx, data, datalen); slen = RSA_size(key->rsa); sig = xmalloc(slen); - ok = RSA_sign(nid, digest, dlen, sig, &len, key->rsa); + EVP_SignFinal(&mctx, sig, &len, pkey); =========================================================================== But, unfortunately both these approaches end with the following error message. "error:0408E09E:rsa routines:PKEY_RSA_SIGN:operation not allowed in fips mode." It would be much appreciated if anyone can let me know why I'm hitting this, and if there is any way of getting around it. Thanks, Mahoda
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