if (!cctx->iv_set)
return -1;
- if (!EVP_CIPHER_CTX_encrypting(ctx) && !cctx->tag_set)
- return -1;
if (!out) {
if (!in) {
if (CRYPTO_ccm128_setiv(ccm, EVP_CIPHER_CTX_iv_noconst(ctx),
CRYPTO_ccm128_aad(ccm, in, len);
return len;
}
+
+ /* The tag must be set before actually decrypting data */
+ if (!EVP_CIPHER_CTX_encrypting(ctx) && !cctx->tag_set)
+ return -1;
+
/* If not set length yet do it */
if (!cctx->len_set) {
if (CRYPTO_ccm128_setiv(ccm, EVP_CIPHER_CTX_iv_noconst(ctx),