trait HkdfOps extends AnyRef
The expansion step of the HMAC-based key derivation function (HKDF) as defined in: https://tools.ietf.org/html/rfc5869
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- abstract def computeHkdfInternal(keyMaterial: ByteString, outputBytes: Int, info: HkdfInfo, salt: ByteString = ByteString.EMPTY, algorithm: HmacAlgorithm = defaultHmacAlgorithm): Either[HkdfError, SecureRandomness]
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- abstract def hkdfExpandInternal(keyMaterial: SecureRandomness, outputBytes: Int, info: HkdfInfo, algorithm: HmacAlgorithm = defaultHmacAlgorithm): Either[HkdfError, SecureRandomness]
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- def computeHkdf(keyMaterial: ByteString, outputBytes: Int, info: HkdfInfo, salt: ByteString = ByteString.EMPTY, algorithm: HmacAlgorithm = defaultHmacAlgorithm): Either[HkdfError, SecureRandomness]
Produce a new secret from the given key material using the HKDF from RFC 5869 with both extract and expand phases.
Produce a new secret from the given key material using the HKDF from RFC 5869 with both extract and expand phases.
- keyMaterial
Input key material from which to derive another key.
- outputBytes
The length of the produced secret. May be at most 255 times the size of the output of the selected hashing algorithm. If you need to derive multiple keys, set the
infoparameter to different values, for each key that you need.- info
Specify the purpose of the derived key (optional). Note that you can derive multiple independent keys from the same key material by varying the purpose.
- salt
Optional salt. Should be set if the input key material is not cryptographically secure, uniformly random.
- algorithm
The hash algorithm to be used for the HKDF construction
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- def hkdfExpand(keyMaterial: SecureRandomness, outputBytes: Int, info: HkdfInfo, algorithm: HmacAlgorithm = defaultHmacAlgorithm): Either[HkdfError, SecureRandomness]
Produce a new secret from the given secret and purpose.
Produce a new secret from the given secret and purpose. Only performs the expand step of the HKDF from RFC 5869.
- keyMaterial
Cryptographically secure, uniformly random initial key material. Must be at least as long as the length of the hash function chosen for the HMAC scheme.
- outputBytes
The length of the produced secret. May be at most 255 times the size of the output of the selected hashing algorithm. If you need to derive multiple keys, set the
infoparameter to different values, for each key that you need.- info
Specify the purpose of the derived key (optional). Note that you can derive multiple independent keys from the same key material by varying the purpose.
- algorithm
The hash algorithm to be used for the HKDF construction
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