KMS Sign digest message format #2656
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paullallier
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Hi,
I'm not sure if this is a misunderstanding on my part, an issue with the documentation, or a bug.
I'm trying to use KSM:Sign with ECDSA_SHA_256 and a pre-hashed digest message. The documentation suggests the message should be in base64 encoding. I believe an SHA_256 hash digest is 32bytes, which is 44 characters in base64, but when I gets a request with a 44 character base64 string, I get:
I've tried stripping the final '=' off the hash to make a 43 character string, but I get the same error.
Has anyone manages to use this with a digest message from the SDK? It works fine with RAW message types.
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