int EVP_CIPHER_CTX_iv_length(const EVP_CIPHER_CTX *ctx)
{
- int rv;
- size_t len, v = EVP_CIPHER_iv_length(ctx->cipher);
+ int rv, len = EVP_CIPHER_iv_length(ctx->cipher);
+ size_t v = len;
OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
params[0] = OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_IVLEN, &v);
if ((EVP_CIPHER_flags(ctx->cipher) & EVP_CIPH_CUSTOM_IV_LENGTH) != 0) {
rv = EVP_CIPHER_CTX_ctrl((EVP_CIPHER_CTX *)ctx, EVP_CTRL_GET_IVLEN,
0, &len);
- return (rv == 1) ? (int)len : -1;
+ return (rv == 1) ? len : -1;
}
- return v;
+ return len;
+}
+
+int EVP_CIPHER_CTX_tag_length(const EVP_CIPHER_CTX *ctx)
+{
+ int ret;
+ size_t v = 0;
+ OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
+
+ params[0] = OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_AEAD_TAGLEN, &v);
+ ret = evp_do_ciph_ctx_getparams(ctx->cipher, ctx->provctx, params);
+ return ret == 1 ? (int)v : 0;
}
const unsigned char *EVP_CIPHER_CTX_original_iv(const EVP_CIPHER_CTX *ctx)