Blockchain

Detailed description

Operations to support the security of Blockchain-based structures.

See the HSM technical documentation.

Functions
byte[]	bchainSignHash (byte bType, byte bHashMode, byte[] pbHash, String strPk) throws TacException
	Sign a hash using the blockchain module.
byte[]	bchainGetPubKey (byte bType, String jszId) throws TacException
	Recover a public key from a private key using the blockchain module.

Functions

bchainSignHash()

byte[] bchainSignHash	(	byte	bType,
		byte	bHashMode,
		byte[]	pbHash,
		String	strPk ) throws TacException

Sign a hash using the blockchain module.

Parameters

bType	Type of subscription to be generated. It can be one of the values below. Value Meaning TacNDJavaLib.DN_BCHAIN_SIG_DER_ECDSA DER signature, in the format v || DER. SECG!SEC1 strict DER with low S as described in BIP62/66, BIP146, EIP2. With 'v' having a size of 1 byte. 'v' is the parity bit of 'r' and can have the values 0 or 1. TacNDJavaLib.DN_BCHAIN_SIG_RAW_ECDSA RAW signature, in the format v || r || s. With 'v' having a size of 1 byte and 'r' and 's' each having a size of 32 bytes. 'v' is the parity bit of 'r' and can have the values 0 or 1. TacNDJavaLib.DN_BCHAIN_SIG_BIP340 Signature BIP340 - Schnorr 64 bytes.
bHashMode	Hash type. Value Meaning TacNDJavaLib.DN_BCHAIN_HASH_BTC_H160 Bitcoin H160. TacNDJavaLib.DN_BCHAIN_HASH_RIPEMD160 RIPEMD160. TacNDJavaLib.DN_BCHAIN_HASH_SHA256 SHA256 TacNDJavaLib.DN_BCHAIN_HASH_BTC_SHA256_2X Bitcoin SHA256 2x. TacNDJavaLib.DN_BCHAIN_HASH_KECCAK256 KECCAK256.
pbHash	Hash to be signed.
strPk	Private key identifier.

Return

Signature in the format specified in bType.

Exceptions

TacException

bchainGetPubKey()

byte[] bchainGetPubKey	(	byte	bType,
		String	jszId ) throws TacException

Recover a public key from a private key using the blockchain module.

Parameters

bType

Format of the public key to be exported. Can be one of the values below. Value Meaning TacNDJavaLib.DN_BCHAIN_PBK_SEC1_UNCOMP ECDSA SEC1 uncompressed. TacNDJavaLib.DN_BCHAIN_PBK_SEC1_COMP ECDSA SEC1 compressed. TacNDJavaLib.DN_BCHAIN_PBK_BIP340 Schnorr, BIP-340. TacNDJavaLib.DN_BCHAIN_PBK_ED25519 Ed25519. TacNDJavaLib.DN_BCHAIN_PBK_AT_ALGORAND Algorand. TacNDJavaLib.DN_BCHAIN_PBK_BIP32_XPUB BIP32 XPub. TacNDJavaLib.DN_BCHAIN_PBK_AT_SOL Solana.

jszId

Private key identifier.

Return

Public key in the format specified in bType.

Exceptions

TacException