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DA.Crypto.Text Functions for working with Crypto builtins.
For example, as used to implement CCTP functionality.
Module Snapshot Lifecycle Alpha (experimental).
Notices Status: active
Introduced in: 3.4.9
Removed in: -
Warnings: 2
Deprecations: 0
Deprecated since: -
DA.Crypto.Text is an alpha feature. It can change without notice.
DA.Crypto.Text is an alpha feature. It can change without notice.
use -Wno-crypto-text-is-alpha in build-options to disable this warning
Data Types type BytesHex = Texttype PublicKeyHex = TextA DER formatted public key to be used for ECDSA signature verification
type SignatureHex = TextA DER formatted SECP256K1 signature
Typeclasses class HasToHex aMethods:
toHex : a -> BytesHex
Converts a typed data value into a hex encoded string.
Instances:
instance HasToHex Partyinstance HasToHex Intinstance HasToHex Text
class HasFromHex aMethods:
fromHex : BytesHex -> a
Converts a hex encoded string into a typed data value.
Instances:
instance HasFromHex (Optional Party)instance HasFromHex (Optional Int)instance HasFromHex (Optional Text)
Functions isHexisHex is True if t is not empty and consists only of
hex or hexadecimal characters.sha256sha256 : BytesHex -> BytesHex
Computes the SHA256 hash of the decoded UTF8 bytes of the Text, and returns it in its hex-encoded
form. The hex encoding uses lowercase letters.
keccak256keccak256 : BytesHex -> BytesHex
Computes the KECCAK256 hash of the UTF8 bytes of the Text, and returns it in its hex-encoded
form. The hex encoding uses lowercase letters.
secp256k1WithEcdsaOnlysecp256k1WithEcdsaOnly : SignatureHex -> BytesHex -> PublicKeyHex -> Bool
Validate the SECP256K1 signature given a hex encoded message and a hex encoded DER formatted public key.
secp256k1secp256k1 : SignatureHex -> BytesHex -> PublicKeyHex -> Bool
Validate the SECP256K1 signature given a SHA256 hash of a hex encoded message and a hex encoded DER formatted public key.
numericViaStringToHexnumericViaStringToHex : NumericScale n => Numeric n -> BytesHex
numericViaStringFromHexnumericViaStringFromHex : NumericScale n => BytesHex -> Optional ( Numeric n)
byteCountbyteCount : BytesHex -> Int
Number of bytes present in a byte encoded string.
minBytes32HexMinimum Bytes32 hex value
maxBytes32HexMaximum Bytes32 hex value
isBytes32HexisBytes32Hex : BytesHex -> Bool
Validate that the byte encoded string is Bytes32Hex
minUInt32HexMinimum UInt32 hex value
maxUInt32HexMaximum UInt32 hex value
isUInt32HexisUInt32Hex : BytesHex -> Bool
Validate that the byte encoded string is UInt32Hex
minUInt64HexMinimum UInt64 hex value
maxUInt64HexMaximum UInt64 hex value
isUInt64HexisUInt64Hex : BytesHex -> Bool
Validate that the byte encoded string is UInt64Hex
minUInt256HexMinimum UInt256 hex value
maxUInt256HexMaximum UInt256 hex value
isUInt256HexisUInt256Hex : BytesHex -> Bool
Validate that the byte encoded string is UInt256Hex
packHexBytespackHexBytes : BytesHex -> Int -> Optional BytesHex
Pack a byte encoded string to a given byte count size. If the byte string is shorter than the pad
size, then prefix with 00 byte strings. If the byte string is larger, then truncate the byte string.
sliceHexBytessliceHexBytes : BytesHex -> Int -> Int -> Either Text BytesHex
Extract the byte string starting at startByte up to, but excluding, endByte. Byte indexing starts at 1. 
