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2019-12-18 11:47:11 -05:00
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protocol/blockchain/transaction/locking-script.md
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@@ -13,7 +13,7 @@ The P2PK locking script expects the unlocking script to push a signature to the
| [push data](/protocol/blockchain/script/opcodes/push-data) (public key) | Add the recipient's public key to the stack. The data pushed must be either a compressed or uncompressed public key with appropriate length for the type for the script to be recognized as P2PK. | | [push data](/protocol/blockchain/script/opcodes/push-data) (public key) | Add the recipient's public key to the stack. The data pushed must be either a compressed or uncompressed public key with appropriate length for the type for the script to be recognized as P2PK. |
| [OP_CHECKSIG](/protocol/blockchain/script/opcodes/op-checksig) | Check the public key at the top of the stack against the signature below it on the stack. | | [OP_CHECKSIG](/protocol/blockchain/script/opcodes/op-checksig) | Check the public key at the top of the stack against the signature below it on the stack. |
**NOTE:** Pay to Public Key is a largely obsolete type of locking script due to its property of leaking the public key of the recipient before the output is unlocked. Additionally, this paradigm results in: <img src="/_static_/images/warning.png" /> **NOTE:** Pay to Public Key is a largely obsolete type of locking script due to its property of leaking the public key of the recipient before the output is unlocked. Additionally, this paradigm results in:
1. More data to be transferred to request funds, since a public key is larger than the addresses used in other standard scripts. 1. More data to be transferred to request funds, since a public key is larger than the addresses used in other standard scripts.
2. Decreased security in the event of a break in the ECDSA signature algorithm. That is, if it ever becomes possible to create a signature using a public key (not currently known to be possible), the public key is readily available. 2. Decreased security in the event of a break in the ECDSA signature algorithm. That is, if it ever becomes possible to create a signature using a public key (not currently known to be possible), the public key is readily available.