Re: [Query] RSA SHA-384 signature verification

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Am Montag, 15. Juni 2020, 19:04:14 CEST schrieb Anshuman Gupta:

Hi Anshuman,

> Hi ,
> I wanted to verify a RSA SHA-384 signature.
> I am using crypto_alloc_shash(), crypto_shash_digest() API to extract
> the SHA-384 digest.
> I am having public key along with the sha-384 digest extracted from raw data
> and signature. AFAIU understand from crypto documentation that i need to
> verify the signature by importing public key to akcipher/skcipher API.
> Here i am not sure which cipher API to prefer symmetric key cipher or
> asymmetric key cipher API.
> 
> There are two types of API to import the key.
> crypto_skcipher_setkey()
> crypto_akcipher_set_pub_key()
> 
> Also i am not sure exactly which algo to use for RSA-SHA384 signature
> verification.
> 
> Any help or inputs from crypto community will highly appreciated.

akcipher: asymmetric key crypto

skcipher: symmetric key crypto
> 
> Thanks ,
> Anshuman Gupta.


Ciao
Stephan





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