crypto

Documentation

Index

• func AggregatePublicKeys(keys []*runtime.PublicKey) (*runtime.PublicKey, error)
• func AggregateSignatures(sigs [][]byte) (crypto.Signature, error)
• func CryptoToRuntimeHashingAlgorithm(h hash.HashingAlgorithm) runtime.HashAlgorithm
• func CryptoToRuntimeSigningAlgorithm(s crypto.SigningAlgorithm) runtime.SignatureAlgorithm
• func HashWithTag(hashAlgo hash.HashingAlgorithm, tag string, data []byte) ([]byte, error)
• func NewPrefixedHashing(shaAlgo hash.HashingAlgorithm, tag string) (hash.Hasher, error)
• func RuntimeToCryptoHashingAlgorithm(s runtime.HashAlgorithm) hash.HashingAlgorithm
• func RuntimeToCryptoSigningAlgorithm(s runtime.SignatureAlgorithm) crypto.SigningAlgorithm
• func ValidatePublicKey(signAlgo runtime.SignatureAlgorithm, pk []byte) error
• func VerifyPOP(pk *runtime.PublicKey, s crypto.Signature) (bool, error)
• func VerifySignatureFromRuntime(verifier SignatureVerifier, signature []byte, tag string, message []byte, ...) (bool, error)
• type DefaultSignatureVerifier
  • func NewDefaultSignatureVerifier() DefaultSignatureVerifier
  • func (DefaultSignatureVerifier) Verify(signature []byte, tag string, message []byte, publicKey crypto.PublicKey, ...) (bool, error)
• type SignatureVerifier

Functions

func AggregatePublicKeys

func AggregatePublicKeys(keys []*runtime.PublicKey) (*runtime.PublicKey, error)

AggregatePublicKeys aggregate multiple public keys into one; currently only works for BLS

func AggregateSignatures

func AggregateSignatures(sigs [][]byte) (crypto.Signature, error)

AggregateSignatures aggregate multiple signatures into one; currently only works for BLS

func CryptoToRuntimeHashingAlgorithm

func CryptoToRuntimeHashingAlgorithm(h hash.HashingAlgorithm) runtime.HashAlgorithm

CryptoToRuntimeHashingAlgorithm converts a crypto hashing algorithm to a runtime hash algorithm.

func CryptoToRuntimeSigningAlgorithm

func CryptoToRuntimeSigningAlgorithm(s crypto.SigningAlgorithm) runtime.SignatureAlgorithm

CryptoToRuntimeSigningAlgorithm converts a crypto signature algorithm to a runtime signature algorithm.

func HashWithTag

func HashWithTag(hashAlgo hash.HashingAlgorithm, tag string, data []byte) ([]byte, error)

func NewPrefixedHashing

func NewPrefixedHashing(shaAlgo hash.HashingAlgorithm, tag string) (hash.Hasher, error)

NewPrefixedHashing returns a new hasher that prefixes the tag for all hash computations (only when tag is not empty). Only SHA2 and SHA3 algorithms are supported.

func RuntimeToCryptoHashingAlgorithm

func RuntimeToCryptoHashingAlgorithm(s runtime.HashAlgorithm) hash.HashingAlgorithm

RuntimeToCryptoHashingAlgorithm converts a runtime hash algorithm to a crypto hashing algorithm.

func RuntimeToCryptoSigningAlgorithm

func RuntimeToCryptoSigningAlgorithm(s runtime.SignatureAlgorithm) crypto.SigningAlgorithm

RuntimeToCryptoSigningAlgorithm converts a runtime signature algorithm to a crypto signature algorithm.

func ValidatePublicKey

func ValidatePublicKey(signAlgo runtime.SignatureAlgorithm, pk []byte) error

ValidatePublicKey returns : - nil if key is valid and no exception occurred. - crypto.invalidInputsError if key is invalid and no exception occurred. - panics if an exception occurred.

func VerifyPOP

func VerifyPOP(pk *runtime.PublicKey, s crypto.Signature) (bool, error)

VerifyPOP verifies a proof of possession (PoP) for the receiver public key; currently only works for BLS

func VerifySignatureFromRuntime

func VerifySignatureFromRuntime(
	verifier SignatureVerifier,
	signature []byte,
	tag string,
	message []byte,
	rawPublicKey []byte,
	signatureAlgorithm runtime.SignatureAlgorithm,
	hashAlgorithm runtime.HashAlgorithm,
) (bool, error)

VerifySignatureFromRuntime is an adapter that performs signature verification using raw values provided by the Cadence runtime.

Types

type DefaultSignatureVerifier

type DefaultSignatureVerifier struct{}

func NewDefaultSignatureVerifier

func NewDefaultSignatureVerifier() DefaultSignatureVerifier

func (DefaultSignatureVerifier) Verify

func (DefaultSignatureVerifier) Verify(
	signature []byte,
	tag string,
	message []byte,
	publicKey crypto.PublicKey,
	hashAlgo hash.HashingAlgorithm,
) (bool, error)

type SignatureVerifier

type SignatureVerifier interface {
	Verify(
		signature []byte,
		tag string,
		message []byte,
		publicKey crypto.PublicKey,
		hashAlgo hash.HashingAlgorithm,
	) (bool, error)
}