+# define S390X_aes_128_cfb_CAPABLE (S390X_aes_128_CAPABLE && \
+ (OPENSSL_s390xcap_P.kmf[0] & \
+ S390X_CAPBIT(S390X_AES_128)))
+# define S390X_aes_192_cfb_CAPABLE (S390X_aes_192_CAPABLE && \
+ (OPENSSL_s390xcap_P.kmf[0] & \
+ S390X_CAPBIT(S390X_AES_192)))
+# define S390X_aes_256_cfb_CAPABLE (S390X_aes_256_CAPABLE && \
+ (OPENSSL_s390xcap_P.kmf[0] & \
+ S390X_CAPBIT(S390X_AES_256)))
+
+static int s390x_aes_cfb_init_key(EVP_CIPHER_CTX *ctx,
+ const unsigned char *key,
+ const unsigned char *ivec, int enc)
+{
+ S390X_AES_CFB_CTX *cctx = EVP_C_DATA(S390X_AES_CFB_CTX, ctx);
+ const unsigned char *iv = EVP_CIPHER_CTX_original_iv(ctx);
+ const int keylen = EVP_CIPHER_CTX_key_length(ctx);
+ const int ivlen = EVP_CIPHER_CTX_iv_length(ctx);
+
+ cctx->fc = S390X_AES_FC(keylen);
+ cctx->fc |= 16 << 24; /* 16 bytes cipher feedback */
+ if (!enc)
+ cctx->fc |= S390X_DECRYPT;
+
+ cctx->res = 0;
+ memcpy(cctx->kmf.param.cv, iv, ivlen);
+ memcpy(cctx->kmf.param.k, key, keylen);
+ return 1;
+}