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Author SHA1 Message Date
Chris Stewart
ff0b117c0e Adding code to implement the script flag NULLDUMMy, changing how mulsignature script sigs are assigned in the factory. Now it can be ANY script number operation. When the script is evaluated it checks the NULLDUMMY flag and if the scriptsig starts with an OP_0 2016-03-28 09:22:52 -05:00
Chris Stewart
2a1f8742ce Changing SIGHASH_ALL to be a case class so it can hold the byte of whatever the last byte in a signature is. This is needed because if the last byte does not match any other hash types it is classified as a SIGHASH_ALL 2016-03-27 12:05:41 -05:00
Chris Stewart
89b9c7f29f Factoring out TransactionSignatureCheckerResult into it's own file 2016-03-27 10:48:42 -05:00
Chris Stewart
0af48b52f6 Changing hash type factory to default to SIGHASH_ALL if the input does not match any other SIGHASH types 2016-03-27 10:35:45 -05:00
Chris Stewart
2b1395ce1d Adding three result types for transaction signature checker - can succeeed, can fail because of der encoding, and can fail because of incorrect signatures. This takes care of issues of BIP66 examples 2016-03-26 15:01:18 -05:00
Chris Stewart
46eb3eb7ea Fixing bug of finding hash type of the empty digital signature 2016-03-26 14:34:02 -05:00
Chris Stewart
932705595b Fixing more bugs with calculating maxSigs & requiredSigs inside of multisignatureScriptPubKey 2016-03-25 17:58:19 -05:00
Chris Stewart
e075a239a4 Adding restrictions inside of ScriptPubKeyFactory for MultiSignaturePubKeys, now need to have atleast 2 ScriptNumberOperations 2016-03-25 14:22:23 -05:00
Chris Stewart
c891d220ac Refactoring functionality inside of TranasctionSignatureChecker to reuse the same code for both p2sh multisig redeem scripts & regular multisig scripts. Also redoing how maxSigs is calculated for MultiSignatureScriptPubKeys 2016-03-25 13:48:03 -05:00
Chris Stewart
c495261f3a Adding empty signature to ECDigitalSignature, adding unit tests for empty signature. Factoring DER signature encoding out of TransactionSignatureChecker 2016-03-25 12:03:47 -05:00
Chris Stewart
c141bbda7d Putting band aid on bip66 example 6 right now using a Try type if public key verification fails inside of bitcoinj 2016-03-24 21:02:14 -05:00
Chris Stewart
b2332596e2 Fixing bug where isStrictDerEncoding was not working for the empty signature 2016-03-24 20:20:55 -05:00
Chris Stewart
4b7eb99836 Adding functionality inside of OP_CHECKSIG to see if the DERSIG flag is set 2016-03-24 19:35:16 -05:00
Chris Stewart
215cdddf20 Adding function to detect if a signature is strictly der encoded according to BIP66 2016-03-24 17:43:18 -05:00
Chris Stewart
7d8699e822 Adding ScriptVerifyFlag to indicate if CLTV is enforced or not 2016-03-24 11:23:19 -05:00
Chris Stewart
91feb92709 Creating ScriptFlagFactory to parse script flags and create them from strings 2016-03-23 15:25:57 -05:00
Chris Stewart
be8ae500c7 Adding ScriptVerify flags for script evaluation 2016-03-23 13:40:54 -05:00
Chris Stewart
07c2ed3669 Decoding (r,s) from DER signatures 2016-03-23 11:25:48 -05:00
Chris Stewart
72657b898f Adding functionality to check if a signature isDEREncoded' 2016-03-22 20:05:45 -05:00
Chris Stewart
b9197a8613 Adding spongycastle as a dependency, cleaning up more usages of ScalacoinUtil 2016-03-22 08:15:16 -05:00
Chris Stewart
82d5713549 Fixing bug where single OP_0 was being classified as a MultiSignatureScriptSig 2016-03-21 15:41:15 -05:00
Chris Stewart
df085162a4 Switching to explicitly parsing redeemScripts now instead of parsing them while they are running through ScriptParser - this is how bitcoin core treats redeemScripts. This will make it easier for evaluating scriptSigs with redeemScripts in them 2016-03-21 14:02:04 -05:00
Chris Stewart
26ba8d956e Slightly modifying line in script_valid.json to separate an OP_PUSHDATA op from the size of the data being pushed 2016-03-21 09:39:24 -05:00
Chris Stewart
55ae249f52 Adding new hash types to the available hashtypes inside of HashTypeFactory 2016-03-20 13:04:12 -05:00
Chris Stewart
e3f96968b2 Successfully building crediting tx and spending tx for bitcoin core tests inside of script_valid.json 2016-03-19 21:12:40 -05:00
Chris Stewart
cbac956ba7 adding requirement to buildSpendingTransaction to make sure it is the same as bitcoin core's buildSpendingTransaction 2016-03-19 15:12:32 -05:00
Chris Stewart
a9c52728f3 Adding code to mimic how transactions are built for script_valid.json inside of bitcoin core 2016-03-18 13:12:42 -05:00
Chris Stewart
86c7841cac Fixing bug in how p2pk are evaluated in opCheckSig 2016-03-17 11:26:59 -05:00
Chris Stewart
f90b5d15d5 Fixing bug where p2pk scriptPubKeys were not being assigned the correct case class 2016-03-16 13:14:56 -05:00
Chris Stewart
f2f849f23b Adding functionality to parse a p2pk scriptSig into the correct case class 2016-03-16 13:01:33 -05:00
Chris Stewart
82eac5ea15 Refactoring codebase back to use explicit ScriptPubKeyFactory & ScriptSignatureFactory - I think this will be better for long term maintainability 2016-03-16 09:46:34 -05:00
Chris Stewart
207674c6f9 Fixing bug in finding requiredSigs for MultiSignatureScriptPubKey - the number of sigs always follows the OP_0 that has to be placed in the scriptPubKey 2016-03-15 13:05:29 -05:00
Chris Stewart
c8ed1662d7 Addign case object to represent the empty script sig 2016-03-15 12:07:23 -05:00
Chris Stewart
0efe9d970b Adding case inside of ECDigitalSignature for empty digital signatures - these are used inside of Bitcoin Core's script_valid.json test cases 2016-03-15 10:09:12 -05:00
Chris Stewart
00fde6fe56 Refactoring interface for script interpreter - now clients are responsible for building ScriptPrograms. Also adding another parameter for scriptSigs/scriptPubKeys to pass in the parsed asm representation along with the hexadecimal representation 2016-03-14 15:56:28 -05:00
Chris Stewart
4843ee5c5e Adding a wrapper scriptSig/scriptPubKey from core test cases 2016-03-14 12:52:23 -05:00
Chris Stewart
26d827cde9 Merge pull request #2 from Christewart/checksig_implementation 
Checksig implementation
 2016-03-14 10:13:14 -05:00
Chris Stewart
a4a4b0bea4 Cleaning up some compiler warnings 2016-03-14 10:08:48 -05:00
Chris Stewart
2e9d362a83 Validating 2/3 p2sh scriptSig and making sure it fails to validate a 2/3 scriptSig that doesn't have enough sigs 2016-03-14 09:46:52 -05:00
Chris Stewart
aa25c4d199 Adding scaladocs for traits 2016-03-13 19:37:00 -05:00
Chris Stewart
df73627ae5 Removing ScriptSignatureFactory companion object - creating dependency inside of ScriptSignatureFactory to be injected with a ScriptSignature 2016-03-12 07:02:32 -06:00
Chris Stewart
57920765dc Fixing compiler warnings about matching exhaustiveness inside of TransactionSignatureChecker - adding BitcoinSLogger trait for common logging across the implementation 2016-03-11 10:24:58 -06:00
Chris Stewart
588737eec8 Removing ScriptPubKeyFactory companion objecting - creating dependency of ScriptPubKeyFactory to be injected with a ScriptPubKey 2016-03-11 09:44:39 -06:00
Chris Stewart
23dfba3788 Adding case to handle p2pk scriptSignature type inside of TransactionSignatureChecker 2016-03-10 07:08:10 -06:00
Chris Stewart
db0355a453 Successfully verifying a 2 of 2 p2sh scriptSig against its scriptPubKey - next is validating m/n where m != n 2016-03-09 19:12:40 -06:00
Chris Stewart
c800777981 Fixing bug in SIGHASH_SINGLE implementation - now added a regression test in the translated bitcoinj hashForSignature & my home grown translated version to make sure the hashes are identical 2016-03-09 18:19:12 -06:00
Chris Stewart
22fa7af6dc Changing type of redeemScript inside of P2SHScriptSignature from Seq[ScriptToken] to ScriptPubKey 2016-03-08 19:51:06 -06:00
Chris Stewart
629c65cd7b Refactoring test cases from scriptPubkeys/scriptSigs into their own files 2016-03-08 09:53:24 -06:00
Chris Stewart
dbfb367fac Successfully validating a multisignature script signature is spending a multi signature scriptPubKey correctly 2016-03-07 15:59:17 -06:00
Chris Stewart
f5063bc8c2 Implementing function to find public keys, required sigs, and maximum signatures inside a multisignature scriptPubKey output 2016-03-07 15:28:58 -06:00