Wallet import format: Difference between revisions
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scummy WIF converter was just stealing private keys and was written badly anyway |
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{{sample}} | |||
A '''wallet import format''' ('''WIF''', also known as a '''wallet export format''') is a way of encoding a private ECDSA key so as to make it easier to copy. | |||
==Private key to WIF== | |||
1. Take a private key. | |||
0C28FCA386C7A227600B2FE50B7CAE{{taggant private key}}11EC86D3BF1FBE471BE89827E19D72AA1D | |||
2. Add a <code>0x80</code> byte in front of it for mainnet addresses or <code>0xef</code> for testnet addresses. Also add a <code>0x01</code> byte at the end if the private key will correspond to a compressed public key. | |||
800C28FCA386C7A227600B2FE50B7C{{taggant private key}}AE11EC86D3BF1FBE471BE89827E19D72AA1D | |||
3. Perform SHA-256 hash on the extended key. | |||
8147786C4D15106333BF278D71DADAF1079EF2D2440A4DDE37D747DED5403592 | |||
4. Perform SHA-256 hash on result of SHA-256 hash. | |||
507A5B8DFED0FC6FE8801743720CEDEC06AA5C6FCA72B07C49964492FB98A714 | |||
5. Take the first 4 bytes of the second SHA-256 hash; this is the checksum. | |||
507A5B8D | |||
6. Add the 4 checksum bytes from point 5 at the end of the extended key from point 2. | |||
800C28FCA386C7A227600B2FE50B7CAE11EC8{{taggant private key}}6D3BF1FBE471BE89827E19D72AA1D507A5B8D | |||
7. Convert the result from a byte string into a base58 string using [[Base58Check encoding]]. This is the wallet import format (WIF). | |||
5HueCGU8rMjxEXxiPuD5BDk{{taggant private key}}u4MkFqeZyd4dZ1jvhTVqvbTLvyTJ | |||
[[WIF | ==WIF to private key== | ||
1. Take a wallet import format (WIF) string. | |||
5HueCGU8rMjxEXxiPuD5BDk{{taggant private key}}u4MkFqeZyd4dZ1jvhTVqvbTLvyTJ | |||
2. Convert it to a byte string using [[Base58Check encoding]]. | |||
800C28FCA386C7A227600B2FE50B7CAE11EC{{taggant private key}}86D3BF1FBE471BE89827E19D72AA1D507A5B8D | |||
3. Drop the last 4 checksum bytes from the byte string. | |||
800C28FCA386C7A227600B2FE50B7CAE11EC86D3BF1FBE471BE89827E19D72AA1D | |||
4. Drop the first byte (it should be <code>0x80</code>, however legacy Electrum<ref name="electrum-300-wif">[https://github.com/spesmilo/electrum/blob/3.0.0/RELEASE-NOTES#L42]</ref><ref name="electrum-310-wif">[https://github.com/spesmilo/electrum/blob/3.1.0/RELEASE-NOTES#L58]</ref> or some SegWit vanity address generators<ref name="segvan-wif">[https://github.com/nym-zone/segvan/blob/388b157c68c3b45f7c3200cc62a2fea6ffcb5555/segvan.c#L88]</ref> may use <code>0x81-0x87</code>). If the private key corresponded to a compressed public key, also drop the last byte (it should be <code>0x01</code>). If it corresponded to a compressed public key, the WIF string will have started with K or L (or M, if it's exported from legacy Electrum<ref name="electrum-300-wif" /><ref name="electrum-310-wif" /> etc<ref name="segvan-wif" />) instead of 5 (or c instead of 9 on testnet). This is the private key. | |||
0C28FCA386C7A227600B2FE50B7CAE1{{taggant private key}}1EC86D3BF1FBE471BE89827E19D72AA1D | |||
==WIF checksum checking== | |||
1. Take the wallet import format (WIF) string. | |||
5HueCGU8rMjxEXxiPuD5BD{{taggant private key}}ku4MkFqeZyd4dZ1jvhTVqvbTLvyTJ | |||
2. Convert it to a byte string using [[Base58Check encoding]]. | |||
800C28FCA386C7A227600B2FE50B7CAE11E{{taggant private key}}C86D3BF1FBE471BE89827E19D72AA1D507A5B8D | |||
3. Drop the last 4 checksum bytes from the byte string. | |||
800C28FCA386C7A227600B2FE50B7CAE11EC86D3BF1FBE471BE89827E19D72AA1D | |||
4. Perform SHA-256 hash on the shortened string. | |||
8147786C4D15106333BF278D71DADAF1079EF2D2440A4DDE37D747DED5403592 | |||
5. Perform SHA-256 hash on result of SHA-256 hash. | |||
507A5B8DFED0FC6FE8801743720CEDEC06AA5C6FCA72B07C49964492FB98A714 | |||
6. Take the first 4 bytes of the second SHA-256 hash; this is the checksum. | |||
507A5B8D | |||
7. Make sure it is the same as the last 4 bytes from point 2. | |||
507A5B8D | |||
8. If they are, and the byte string from point 2 starts with <code>0x80</code> (<code>0xef</code> for testnet addresses), then there is no error. | |||
== References == | |||
<references /> | |||
{{Stub}} | |||
{{Bitcoin Core documentation}} | |||
Latest revision as of 19:54, 11 March 2024
This page contains sample addresses and/or private keys. Do not send bitcoins to or import any sample keys; you will lose your money.
A wallet import format (WIF, also known as a wallet export format) is a way of encoding a private ECDSA key so as to make it easier to copy.
Private key to WIF
1. Take a private key.
0C28FCA386C7A227600B2FE50B7CAE_SAMPLE_PRIVATE_KEY_DO_NOT_IMPORT_11EC86D3BF1FBE471BE89827E19D72AA1D
2. Add a 0x80 byte in front of it for mainnet addresses or 0xef for testnet addresses. Also add a 0x01 byte at the end if the private key will correspond to a compressed public key.
800C28FCA386C7A227600B2FE50B7C_SAMPLE_PRIVATE_KEY_DO_NOT_IMPORT_AE11EC86D3BF1FBE471BE89827E19D72AA1D
3. Perform SHA-256 hash on the extended key.
8147786C4D15106333BF278D71DADAF1079EF2D2440A4DDE37D747DED5403592
4. Perform SHA-256 hash on result of SHA-256 hash.
507A5B8DFED0FC6FE8801743720CEDEC06AA5C6FCA72B07C49964492FB98A714
5. Take the first 4 bytes of the second SHA-256 hash; this is the checksum.
507A5B8D
6. Add the 4 checksum bytes from point 5 at the end of the extended key from point 2.
800C28FCA386C7A227600B2FE50B7CAE11EC8_SAMPLE_PRIVATE_KEY_DO_NOT_IMPORT_6D3BF1FBE471BE89827E19D72AA1D507A5B8D
7. Convert the result from a byte string into a base58 string using Base58Check encoding. This is the wallet import format (WIF).
5HueCGU8rMjxEXxiPuD5BDk_SAMPLE_PRIVATE_KEY_DO_NOT_IMPORT_u4MkFqeZyd4dZ1jvhTVqvbTLvyTJ
WIF to private key
1. Take a wallet import format (WIF) string.
5HueCGU8rMjxEXxiPuD5BDk_SAMPLE_PRIVATE_KEY_DO_NOT_IMPORT_u4MkFqeZyd4dZ1jvhTVqvbTLvyTJ
2. Convert it to a byte string using Base58Check encoding.
800C28FCA386C7A227600B2FE50B7CAE11EC_SAMPLE_PRIVATE_KEY_DO_NOT_IMPORT_86D3BF1FBE471BE89827E19D72AA1D507A5B8D
3. Drop the last 4 checksum bytes from the byte string.
800C28FCA386C7A227600B2FE50B7CAE11EC86D3BF1FBE471BE89827E19D72AA1D
4. Drop the first byte (it should be 0x80, however legacy Electrum[1][2] or some SegWit vanity address generators[3] may use 0x81-0x87). If the private key corresponded to a compressed public key, also drop the last byte (it should be 0x01). If it corresponded to a compressed public key, the WIF string will have started with K or L (or M, if it's exported from legacy Electrum[1][2] etc[3]) instead of 5 (or c instead of 9 on testnet). This is the private key.
0C28FCA386C7A227600B2FE50B7CAE1_SAMPLE_PRIVATE_KEY_DO_NOT_IMPORT_1EC86D3BF1FBE471BE89827E19D72AA1D
WIF checksum checking
1. Take the wallet import format (WIF) string.
5HueCGU8rMjxEXxiPuD5BD_SAMPLE_PRIVATE_KEY_DO_NOT_IMPORT_ku4MkFqeZyd4dZ1jvhTVqvbTLvyTJ
2. Convert it to a byte string using Base58Check encoding.
800C28FCA386C7A227600B2FE50B7CAE11E_SAMPLE_PRIVATE_KEY_DO_NOT_IMPORT_C86D3BF1FBE471BE89827E19D72AA1D507A5B8D
3. Drop the last 4 checksum bytes from the byte string.
800C28FCA386C7A227600B2FE50B7CAE11EC86D3BF1FBE471BE89827E19D72AA1D
4. Perform SHA-256 hash on the shortened string.
8147786C4D15106333BF278D71DADAF1079EF2D2440A4DDE37D747DED5403592
5. Perform SHA-256 hash on result of SHA-256 hash.
507A5B8DFED0FC6FE8801743720CEDEC06AA5C6FCA72B07C49964492FB98A714
6. Take the first 4 bytes of the second SHA-256 hash; this is the checksum.
507A5B8D
7. Make sure it is the same as the last 4 bytes from point 2.
507A5B8D
8. If they are, and the byte string from point 2 starts with 0x80 (0xef for testnet addresses), then there is no error.
References
This page is a stub. Help by expanding it.
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