59 lines
2.1 KiB
C
59 lines
2.1 KiB
C
/** Constantine
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* Copyright (c) 2018-2019 Status Research & Development GmbH
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* Copyright (c) 2020-Present Mamy André-Ratsimbazafy
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* Licensed and distributed under either of
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* * MIT license (license terms in the root directory or at http://opensource.org/licenses/MIT).
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* * Apache v2 license (license terms in the root directory or at http://www.apache.org/licenses/LICENSE-2.0).
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* at your option. This file may not be copied, modified, or distributed except according to those terms.
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*/
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#include <assert.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <constantine_ethereum_bls_signatures.h>
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int main(){
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// Initialize the runtime. For Constantine, it populates the CPU runtime detection dispatch.
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ctt_eth_bls_init_NimMain();
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// Protocol and deserialization statuses
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ctt_eth_bls_status bls_status;
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ctt_codec_scalar_status scalar_status;
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ctt_codec_ecc_status ecc_status;
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// Declare an example insecure non-cryptographically random non-secret key. DO NOT USE IN PRODUCTION.
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byte raw_seckey[32] = "Security pb becomes key mgmt pb!";
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ctt_eth_bls_seckey seckey;
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scalar_status = ctt_eth_bls_deserialize_seckey(&seckey, raw_seckey);
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if (scalar_status != cttCodecScalar_Success) {
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printf(
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"Secret key deserialization failure: status %d - %s\n",
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scalar_status,
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ctt_codec_scalar_status_to_string(scalar_status)
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);
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exit(1);
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}
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// Derive the matching public key
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ctt_eth_bls_pubkey pubkey;
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ctt_eth_bls_derive_pubkey(&pubkey, &seckey);
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// Sign a message
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byte message[32];
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ctt_eth_bls_signature sig;
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ctt_eth_bls_sha256_hash(message, "Mr F was here", 13, /* clear_memory = */ 0);
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ctt_eth_bls_sign(&sig, &seckey, message, 32);
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// Verify that a signature is valid for a message under the provided public key
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bls_status = ctt_eth_bls_verify(&pubkey, message, 32, &sig);
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if (bls_status != cttBLS_Success) {
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printf("Signature verification failure: status %d - %s\n", bls_status, ctt_eth_bls_status_to_string(bls_status));
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exit(1);
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}
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printf("Example BLS signature/verification protocol completed successfully\n");
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return 0;
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} |