linux-kernel - Re: [PATCH] pkcs7: support EC-RDSA/streebog in SignerInfo

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Date:   Wed, 12 May 2021 17:23:46 +0300
From:   Vitaly Chikunov <vt@...linux.org>
To:     Elvira Khabirova <e.khabirova@....ru>
Cc:     keyrings@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-crypto@...r.kernel.org, davem@...emloft.net,
        herbert@...dor.apana.org.au, dhowells@...hat.com
Subject: Re: [PATCH] pkcs7: support EC-RDSA/streebog in SignerInfo

On Tue, May 11, 2021 at 05:47:44PM +0300, Elvira Khabirova wrote:
> Allow using EC-RDSA/streebog in pkcs7 certificates in a similar way
> to how it's done in the x509 parser.
> 
> This is needed e.g. for loading kernel modules signed with EC-RDSA.
> 
> Signed-off-by: Elvira Khabirova <e.khabirova@....ru>

Reviewed-by: Vitaly Chikunov <vt@...linux.org>

Thanks,

> ---
>  crypto/asymmetric_keys/pkcs7_parser.c | 11 +++++++++++
>  1 file changed, 11 insertions(+)
> 
> diff --git a/crypto/asymmetric_keys/pkcs7_parser.c b/crypto/asymmetric_keys/pkcs7_parser.c
> index 967329e0a07b..39c260a04167 100644
> --- a/crypto/asymmetric_keys/pkcs7_parser.c
> +++ b/crypto/asymmetric_keys/pkcs7_parser.c
> @@ -248,6 +248,12 @@ int pkcs7_sig_note_digest_algo(void *context, size_t hdrlen,
>  	case OID_sha224:
>  		ctx->sinfo->sig->hash_algo = "sha224";
>  		break;
> +	case OID_gost2012Digest256:
> +		ctx->sinfo->sig->hash_algo = "streebog256";
> +		break;
> +	case OID_gost2012Digest512:
> +		ctx->sinfo->sig->hash_algo = "streebog512";
> +		break;
>  	default:
>  		printk("Unsupported digest algo: %u\n", ctx->last_oid);
>  		return -ENOPKG;
> @@ -269,6 +275,11 @@ int pkcs7_sig_note_pkey_algo(void *context, size_t hdrlen,
>  		ctx->sinfo->sig->pkey_algo = "rsa";
>  		ctx->sinfo->sig->encoding = "pkcs1";
>  		break;
> +	case OID_gost2012PKey256:
> +	case OID_gost2012PKey512:
> +		ctx->sinfo->sig->pkey_algo = "ecrdsa";
> +		ctx->sinfo->sig->encoding = "raw";
> +		break;
>  	default:
>  		printk("Unsupported pkey algo: %u\n", ctx->last_oid);
>  		return -ENOPKG;
> -- 
> 2.25.1