crypto.getCipherInfo(nameOrNid[, options])
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nameOrNid<string> | <number> 要查询的密码的名称或 nid。¥
nameOrNid<string> | <number> The name or nid of the cipher to query. -
options<Object> -
返回:<Object>
¥Returns: <Object>
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name<string> 密码的名称¥
name<string> The name of the cipher -
nid<number> 密码的 nid¥
nid<number> The nid of the cipher -
blockSize<number> 密码的块大小(以字节为单位)。当mode为'stream'时,此属性被省略。¥
blockSize<number> The block size of the cipher in bytes. This property is omitted whenmodeis'stream'. -
ivLength<number> 以字节为单位的预期或默认初始化向量长度。如果密码不使用初始化向量,则省略此属性。¥
ivLength<number> The expected or default initialization vector length in bytes. This property is omitted if the cipher does not use an initialization vector. -
keyLength<number> 以字节为单位的预期或默认密钥长度。¥
keyLength<number> The expected or default key length in bytes. -
mode<string> 密码模式。'cbc'、'ccm'、'cfb'、'ctr'、'ecb'、'gcm'、'ocb'、'ofb'、'stream'、'wrap'、'xts'之一。¥
mode<string> The cipher mode. One of'cbc','ccm','cfb','ctr','ecb','gcm','ocb','ofb','stream','wrap','xts'.
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返回有关给定密码的信息。
¥Returns information about a given cipher.
一些密码接受可变长度的密钥和初始化向量。默认情况下,crypto.getCipherInfo() 方法将返回这些密码的默认值。要测试给定的密钥长度或 iv 长度对于给定的密码是否可接受,请使用 keyLength 和 ivLength 选项。如果给定的值不可接受,则返回 undefined。
¥Some ciphers accept variable length keys and initialization vectors. By default,
the crypto.getCipherInfo() method will return the default values for these
ciphers. To test if a given key length or iv length is acceptable for given
cipher, use the keyLength and ivLength options. If the given values are
unacceptable, undefined will be returned.