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SubjectRe: [PATCH v10 03/12] PKCS#7: Introduce pkcs7_get_digest()
On Thu, 2019-04-18 at 00:51 -0300, Thiago Jung Bauermann wrote:
> IMA will need to access the digest of the PKCS7 message (as calculated by
> the kernel) before the signature is verified, so introduce
> pkcs7_get_digest() for that purpose.
> Also, modify pkcs7_digest() to detect when the digest was already
> calculated so that it doesn't have to do redundant work. Verifying that
> sinfo->sig->digest isn't NULL is sufficient because both places which
> allocate sinfo->sig (pkcs7_parse_message() and pkcs7_note_signed_info())
> use kzalloc() so sig->digest is always initialized to zero.
> Signed-off-by: Thiago Jung Bauermann <>
> Cc: David Howells <>
> Cc: Herbert Xu <>
> Cc: "David S. Miller" <>

Reviewed-by: Mimi Zohar <>

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