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Bill Buchanan
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@@ -501,7 +501,7 @@ Run the code and answer the following questions:
* Which key (public or private key) is used to verify the signature?
# AWS Lab
Within digital signatures, we have two main three main signatures: RSA and ECDSA.
Within digital signatures, we have two main signatures: RSA, ECDSA and EdDSA. In AWS, we can implement RSA (with PSS) and ECDSA.
## RSA PSS Signatures
In digital signing, we use our private key to sign for a message, and then the proof of signing is done with our public key. This happens for a Bitcoin transaction, and where we take the private key from our wallet and then sign for a transaction. The public key is then used to prove that the user signing the transaction. While Bitcoin uses ECDSA, we can also use RSA signing. A common method is RSASSA_PSS_SHA_256.