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  1. Technical
  2. Hooks Functions
  3. Utilities

util_verify

Verify a cryptographic signature

Behaviour

Verify a cryptographic signature

  • If the public key is prefixed with 0xED then use ED25519

  • Otherwise assume SECP256k1

Definition

int64_t util_verify (
    uint32_t dread_ptr,
    uint32_t dread_len,
    uint32_t sread_ptr,
    uint32_t sread_len,
    uint32_t kread_ptr,
    uint32_t kread_len
);

function util_verify(
    signedData: ByteArray | HexString,
    signature: ByteArray | HexString,
    pubkey: ByteArray | HexString
  ): 0 | 1

Example

if (!util_verify(payload_ptr,    payload_len,
                 signature_ptr,  signature_len,
                 publickey_ptr,  publickey_len))
	rollback("Invalid Signature", 17, 60);
if (util_verify(signedData,signature,pubkey))
    rollback("Invalid Signature", 60)

Parameters

Name
Type
Description

dread_ptr

uint32_t

Pointer to the signed data

dread_len

uint32_t

Length of the signed data

sread_ptr

uint32_t

Pointer to the signature

sread_len

uint32_t

Length of the signature

kread_ptr

uint32_t

Pointer to the public key

kread_len

uint32_t

Length of the public key

Name
Type
Description

signedData

number / string

The signed data to verify, can be provided as an array of numbers or a string.

signature

number / string

The signature to verify, can be provided as an array of numbers or a string.

pubkey

number / string

The public key responsible for the signature, can be provided as an array of numbers or a string.

Return Code

Type
Description

int64_t

0 - validation failed, the signature is invalid. 1 - validation succeeded, the signature is valid. If negative, an error: OUT_OF_BOUNDS - pointers/lengths specified outside of hook memory.

Type
Description

number

0 - validation failed, the signature is invalid. 1 - validation succeeded, the signature is valid.

Last updated 2 months ago

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