crypto: assign and use ERR_CRYPTO_UNKNOWN_CIPHER

doc/api/errors.md

@@ -831,6 +831,11 @@ A signing `key` was not provided to the [`sign.sign()`][] method.
 [`crypto.timingSafeEqual()`][] was called with `Buffer`, `TypedArray`, or
 `DataView` arguments of different lengths.
 
+<a id="ERR_CRYPTO_UNKNOWN_CIPHER"></a>
+### `ERR_CRYPTO_UNKNOWN_CIPHER`
+
+An unknown cipher was specified.
+
 <a id="ERR_CRYPTO_UNKNOWN_DH_GROUP"></a>
 ### `ERR_CRYPTO_UNKNOWN_DH_GROUP`
 

src/node_crypto.cc

@@ -3549,7 +3549,7 @@ static NonCopyableMaybe<PrivateKeyEncodingConfig> GetPrivateKeyEncodingFromJs(
                                       args[*offset].As<String>());
         result.cipher_ = EVP_get_cipherbyname(*cipher_name);
         if (result.cipher_ == nullptr) {
-          env->ThrowError("Unknown cipher");
+          THROW_ERR_CRYPTO_UNKNOWN_CIPHER(env);
           return NonCopyableMaybe<PrivateKeyEncodingConfig>();
         }
         needs_passphrase = true;
@@ -4055,7 +4055,7 @@ void CipherBase::Init(const char* cipher_type,
 
   const EVP_CIPHER* const cipher = EVP_get_cipherbyname(cipher_type);
   if (cipher == nullptr)
-    return env()->ThrowError("Unknown cipher");
+    return THROW_ERR_CRYPTO_UNKNOWN_CIPHER(env());
 
   unsigned char key[EVP_MAX_KEY_LENGTH];
   unsigned char iv[EVP_MAX_IV_LENGTH];
@@ -4119,7 +4119,7 @@ void CipherBase::InitIv(const char* cipher_type,
 
   const EVP_CIPHER* const cipher = EVP_get_cipherbyname(cipher_type);
   if (cipher == nullptr) {
-    return env()->ThrowError("Unknown cipher");
+    return THROW_ERR_CRYPTO_UNKNOWN_CIPHER(env());
   }
 
   const int expected_iv_len = EVP_CIPHER_iv_length(cipher);

src/node_errors.h

@@ -39,6 +39,7 @@ void PrintErrorString(const char* format, ...);
   V(ERR_BUFFER_TOO_LARGE, Error)                                             \
   V(ERR_CONSTRUCT_CALL_REQUIRED, TypeError)                                  \
   V(ERR_CONSTRUCT_CALL_INVALID, TypeError)                                   \
+  V(ERR_CRYPTO_UNKNOWN_CIPHER, Error)                                        \
   V(ERR_CRYPTO_UNKNOWN_DH_GROUP, Error)                                      \
   V(ERR_INVALID_ARG_VALUE, TypeError)                                        \
   V(ERR_OSSL_EVP_INVALID_DIGEST, Error)                                      \
@@ -90,6 +91,7 @@ void PrintErrorString(const char* format, ...);
     "Buffer is not available for the current Context")                       \
   V(ERR_CONSTRUCT_CALL_INVALID, "Constructor cannot be called")              \
   V(ERR_CONSTRUCT_CALL_REQUIRED, "Cannot call constructor without `new`")    \
+  V(ERR_CRYPTO_UNKNOWN_CIPHER, "Unknown cipher")                             \
   V(ERR_CRYPTO_UNKNOWN_DH_GROUP, "Unknown DH group")                         \
   V(ERR_INVALID_TRANSFER_OBJECT, "Found invalid object in transferList")     \
   V(ERR_MEMORY_ALLOCATION_FAILED, "Failed to allocate memory")               \

test/parallel/test-crypto-cipheriv-decipheriv.js

@@ -210,7 +210,11 @@ for (let n = 1; n < 256; n += 1) {
   // Passing an invalid cipher name should throw.
   assert.throws(
     () => crypto.createCipheriv('aes-127', Buffer.alloc(16), null),
-    /Unknown cipher/);
+    {
+      name: 'Error',
+      code: 'ERR_CRYPTO_UNKNOWN_CIPHER',
+      message: 'Unknown cipher'
+    });
 
   // Passing a key with an invalid length should throw.
   assert.throws(

test/parallel/test-crypto-keygen.js

@@ -822,6 +822,7 @@ const sec1EncExp = (cipher) => getRegExpForPEM('EC PRIVATE KEY', cipher);
     }
   }), {
     name: 'Error',
+    code: 'ERR_CRYPTO_UNKNOWN_CIPHER',
     message: 'Unknown cipher'
   });