Tag: signature

34 ECDSA: (v, r, s), what is v? 2015-07-01T09:28:27.847

29 Signing Bitcoin transactions 2013-01-24T10:06:24.967

25 What are the implications of Schnorr signatures? 2015-01-05T02:16:16.557

19 Why the signature is always 65 (1+32+32) bytes long? 2013-08-06T23:31:41.107

17 ECDSA r, s encoding as a signature 2012-01-01T03:05:40.310

16 How does "Sign Message" work? 2012-06-05T12:40:44.343

15 Why use DER encoding for signatures? 2013-11-07T07:18:47.087

15 How to sign a transaction with multiple inputs? 2015-11-03T20:31:23.260

12 Tx Malleability: Why is the Script not included in the Signed Hash? 2014-02-13T14:45:21.750

10 parsing bitcoin input and output addresses from scripts 2013-12-20T03:08:23.073

10 How does the ECDSA verification algorithm work during transaction? 2014-11-04T06:23:56.660

10 Why was the Oct 2015 Transaction Malleability event possible in spite of BIP62/66? 2015-10-23T00:05:53.483

9 Transaction signature generation 2012-03-21T23:45:35.913

9 ECDSA Signature and the "z" value 2014-06-07T05:41:52.527

9 How to sign bitcoin transaction with 'bitcoind' and non-bitcoind-wallet private key? 2014-08-09T18:07:00.703

9 Problems with deterministic ECDSA based on RFC6979 in Bitcoin 2015-02-19T14:14:08.633

8 Where does the random number come in to play when signing a transaction? 2013-08-21T19:11:02.683

8 Is there a user-friendly tool for creating and signing raw transactions? 2013-08-30T21:10:03.927

8 What's the rationale of using ECDSA instead of RSA? 2014-01-28T12:19:21.320

8 What is a step by step way to insert data in OP_RETURN? 2014-05-09T15:18:21.860

8 How to verify Bitcoin Core Release Signing Keys 2016-12-14T13:41:47.837

7 How to sign a transaction hash in ruby? 2013-05-10T20:49:01.740

7 How to verify the signature of a raw transaction 2013-11-17T03:38:25.470

7 Is it possible to add a transaction input to a transaction in the mempool? 2014-03-12T19:18:43.510

7 Can you always derive a public Bitcoin address from a message and a random signature? 2014-04-03T15:14:09.647

7 Bitcoin multi-sign and the amount of storage it required 2016-07-28T20:15:09.053

7 How to sign raw transaction given a private key and SHA hash (in java) 2017-01-04T23:55:23.997

7 Why is there no such thing as a redirected, forged, or fake transaction? 2020-04-28T07:15:53.843

6 Why Do Compact Signatures Need To Start With a Byte 27-35? 2012-10-17T19:43:01.503

6 If addresses are hashes of public keys, how are signatures verified? 2013-03-19T10:55:32.913

6 What standard is used for the ECDSA to verify transactions? 2013-04-10T04:15:53.413

6 How to sign a message using Bitcoin private key? 2013-11-15T15:06:10.420

6 How to sign non-standard transaction 2014-01-08T08:40:38.343

6 How are SIGHASH flags encoded into a signature? 2015-04-27T22:24:19.223

6 Bitcoin how to get X value from Y 2015-07-23T08:13:18.697

6 Why can't bitcoin miners modify transaction outputs? 2015-11-02T00:24:13.960

6 Are SegWit signatures all required to follow BIP143? 2017-03-03T19:59:50.997

6 What is the exact difference between a Bitcoin and Bitcoin Cash raw transaction to address sighash_forkid? 2017-08-13T10:43:13.473

6 generate a P2SH-P2WSH address and spend output sent to it 2017-11-14T09:53:22.257

6 Replacing ECDSA (SECP256k1) with Schnorr signatures 2017-11-29T20:00:54.337

6 What exactly is hashed and signed in a segwit transaction 2018-08-14T20:15:00.913

6 Will Schnorr Multi-signatures completely replace ECDSA? 2019-10-07T11:10:57.927

5 How did these 3 tx make it into a block in the main chain? 2012-03-15T05:22:38.630

5 How does Bitcoin decide which Alert messages to forward? 2012-04-06T21:54:33.403

5 How do signatures work? 2013-12-05T21:56:59.800

5 How are "message signatures" verified without having access to the public key? 2013-12-21T09:49:36.217

5 Isn't bribe smearing possible because no payee signature is required? 2014-01-28T02:07:29.913

5 What should I say when I "sign" a message, to prove that I own an address? 2014-06-02T18:02:34.130

5 The complement of s (when s < curve order / 2) 2015-06-25T01:56:12.413

5 ScriptSig content during signature (quadratic hashing) 2017-06-15T13:21:54.747

5 Step by step example to redeem a P2SH output required 2017-12-22T17:25:34.767

5 How do I generate the Bitcoin Cash hash preimage? 2018-02-22T20:57:54.743

5 Why is my P2SH sigScript field prepended with 0x00? 2018-05-08T13:48:50.777

5 Can signature be re-used to cash out everything in the address? 2019-12-25T06:37:55.363

5 What are the DER signature and SEC format 2020-01-05T21:32:32.313

4 ECDSA transaction signing on a smartcard? 2012-12-19T05:46:44.883

4 How much time it takes to verify a Bitcoin signature in the Satoshi client? 2013-01-30T19:03:01.280

4 Code sample to sign a transaction 2013-12-19T15:11:26.677

4 Are public keys included in signatures? 2014-03-28T11:01:09.570

4 How to specify ECDSA nonce used in bitcoin signing code? 2014-12-08T15:47:29.853

4 Why does txID generation consider signatures? 2014-12-12T22:34:38.990

4 If block sizes go up, won't sigop limits have to change too? 2015-01-23T07:00:21.937

4 Multisig vs Multi input transaction signing 2015-02-03T20:55:59.043

4 How can someone verify the signature of a Bitcoin ECDSA signature without knowing the signer's public key? 2015-02-22T18:56:10.393

4 bitcoin two identical R 2015-05-27T04:57:11.493

4 How is a transaction's output signed? 2016-06-06T18:45:45.813

4 Transaction signature algorithm 2016-06-29T07:40:36.840

4 How are transactions from incoming blocks verified? 2016-10-21T09:01:49.830

4 Why does Bitcoin uses a Script language? 2018-01-20T12:39:24.197

4 33 byte private key? 2018-03-06T11:53:32.977

4 Why bother checking both public key and signature in P2PKH transactions? 2018-03-18T08:58:36.980

4 What is the maximum size of a DER encoded ECDSA signature? 2018-07-13T22:16:13.490

4 How is Public Key extracted from (message, digital signature, address) 2018-11-21T02:34:15.133

4 allowed DER encoding format violations for signatures in bitcoin: implications for libraries? 2018-12-01T15:17:55.990

4 Why is the Schnorr verification formula working and actually verifying the validity of a signature? 2019-03-10T20:25:34.560

4 Low-s value in bitcoin signature 2019-04-09T13:43:26.443

4 If I set assumevalid=0 after syncing the blockchain will Bitcoin Core go back and validate historical blocks? 2019-05-03T04:01:53.257

4 Signing a raw transaction with multiple inputs 2019-12-07T13:16:36.363

4 Why does Bitcoin use ECDSA, instead of plain old hashing, to secure transaction outputs? 2020-12-20T03:27:12.543

3 Linking a transaction to a Bitcoin user 2012-05-01T18:02:22.233

3 For SIGHASH_SINGLE do the outputs other than at the input index, have 8 bytes or 9 bytes including a VarInt? 2012-06-04T13:05:04.087

3 How are transactions verified to ensure only the eligible person can spend a Bitcoin balance? 2013-05-29T13:46:52.977

3 Step by Step - how does sending 1 bitcoin work? 2013-10-14T10:58:27.970

3 Exhaustive technical explanation of signing & verification 2013-12-17T01:18:11.400

3 Is there a signature format, or cryptography has *only one* possible S value? 2014-02-11T23:43:57.007

3 If I am spending multiple inputs from the same address, must I provide a signature for each input? 2014-11-07T04:37:37.450

3 Do new SIGHASH types need a hard fork or a soft fork? 2015-04-02T05:33:13.303

3 How to check if raw transaction is signed? 2015-05-09T18:00:52.930

3 Why are SIGHASH flags signed as 4 bytes when only 1 byte is included in the transaction? 2016-08-18T17:02:10.493

3 Test (r,s) values for signature generation? 2017-01-25T16:20:06.413

3 Building Signed Bitcoin Transaction in Java 2017-03-29T16:36:24.580

3 manually signing bitcoin transaction 2017-08-24T11:29:08.640

3 Got 64: non-mandatory-script-verify-flag (Signature must be zero for failed CHECK(MULTI)SIG operation) when submitting segwit transaction 2017-10-21T04:26:04.263

3 can parent private key sign a transaction created by a child address? 2017-11-03T08:48:49.090

3 Why is scriptSig filled with scriptPubKey before signing a transaction? 2017-11-26T22:21:51.210

3 Why is the signature hash different for each input in a multi-input transaction? 2018-04-13T03:08:19.950

3 How a transaction proves its ownership of the its source, which can be one or multiple unspent output? 2018-04-27T02:41:46.460

3 Would signature aggregation reduce the largest feasible blocksize 2019-02-01T15:04:08.470

3 Are sipa's standardized schnorr signatures incompatible with blind signatures? 2019-02-14T16:07:36.843