EVP_CIPH_OFB_MODE
if (EVP_CIPHER_CTX_get_mode(ctx) == EVP_CIPH_OFB_MODE)
case EVP_CIPH_OFB_MODE:
if (mode == EVP_CIPH_OFB_MODE || mode == EVP_CIPH_CTR_MODE)
|| ctx->mode == EVP_CIPH_OFB_MODE
|| ctx->mode == EVP_CIPH_OFB_MODE)) {
|| ctx->mode == EVP_CIPH_OFB_MODE))