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Sign exported cdi cert with alias key. #375

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merged 1 commit into from
Jan 21, 2025
Merged

Sign exported cdi cert with alias key. #375

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28 changes: 6 additions & 22 deletions dpe/src/x509.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -2465,17 +2465,9 @@ fn create_dpe_cert_or_csr(
return Err(DpeErrorCode::InternalError);
}
let tbs_digest = env.crypto.hash(algs, &scratch_buf[..bytes_written])?;
let sig = match cert_type {
CertificateType::Leaf => env
.crypto
.ecdsa_sign_with_alias(DPE_PROFILE.alg_len(), &tbs_digest),
CertificateType::Exported => env.crypto.ecdsa_sign_with_derived(
DPE_PROFILE.alg_len(),
&tbs_digest,
&priv_key,
&pub_key,
),
}?;
let sig = env
.crypto
.ecdsa_sign_with_alias(DPE_PROFILE.alg_len(), &tbs_digest)?;
let mut cert_writer = CertWriter::new(output_cert_or_csr, true);
bytes_written =
cert_writer.encode_ecdsa_certificate(&scratch_buf[..bytes_written], &sig)?;
Expand Down Expand Up @@ -2509,17 +2501,9 @@ fn create_dpe_cert_or_csr(
}

let csr_digest = env.crypto.hash(algs, &csr_buffer[..bytes_written])?;
let csr_sig = match cert_type {
CertificateType::Leaf => env
.crypto
.ecdsa_sign_with_alias(DPE_PROFILE.alg_len(), &csr_digest),
CertificateType::Exported => env.crypto.ecdsa_sign_with_derived(
DPE_PROFILE.alg_len(),
&csr_digest,
&priv_key,
&pub_key,
),
}?;
let csr_sig = env
.crypto
.ecdsa_sign_with_alias(DPE_PROFILE.alg_len(), &csr_digest)?;
let sid = env.platform.get_signer_identifier()?;

let mut cms_writer = CertWriter::new(output_cert_or_csr, true);
Expand Down
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