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7 years ago · a6b4a12950
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@ -634,7 +634,7 @@ You will not see +SIGHASH+ flags presented as an option in a user's wallet appli

 ((("transactions", "digital signatures", "ECDSA math")))((("Elliptic Curve Digital Signature Algorithm (ECDSA)")))As mentioned previously, signatures are created by a mathematical function F~sig~, that produces a signature composed of two values _R_ and _S_. In this section we look at the function F~sig~ in more detail.

-The signature algorithm first generates an _ephemeral_ (temporary) private public key pair. This temporary key pair is used in the calculation of the _R_ and _S_ values, after a transformation involving the signing private key and the transaction hash.
+((("public and private keys", "key pairs", "ephemeral")))The signature algorithm first generates an _ephemeral_ (temporary) private public key pair. This temporary key pair is used in the calculation of the _R_ and _S_ values, after a transformation involving the signing private key and the transaction hash.

 The temporary key pair is based on a random number _k_, which is used as the temporary private key. From _k_, we generate the corresponding temporary public key _P_ (calculated as _P = k*G_, in the same way bitcoin public keys are derived; see <<pubkey>>). The _R_ value of the digital signature is then the x coordinate of the ephemeral public key _P_.