CODEWITHSUNDEEP
opensslelliptic-curve
user2166777
user2166777

Reputation: 51

OpenSSL command line secp384r1 / SHA-256 digital signatures

Is it possible to generate digital signatures using secp384r1 / SHA-256 from the OpenSSL command line (I'm using version 1.0.1c)? After some experimentation I can generate signatures with SHA-1 using: 

openssl dgst -sign ec-key.pem -ecdsa-with-SHA1 -binary < test.bin > sig.bin

but 

openssl dgst -sign ec-key.pem -ecdsa-with-SHA256 -binary < test.bin > sig.bin

just gives me a known option for '-ecdsa-with-SHA256'?

Thanks in advance

Upvotes: 5

Views: 4211

Answers (1)

Chiara Hsieh
Chiara Hsieh

Reputation: 3393

Try use -sha256 instead of -ecdsa-with-SHA256, and use an EC key to sign it.

Upvotes: 2

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