Populate PKCS9 Authenticate Attributes from signer info if it exists in a PKCS7 message. Add OIDs for describing objects using for Authenticate Attributes.
The PR for this patch is at: https://github.com/Mbed-TLS/mbedtls/pull/9001 For enabling EFI loader PKCS7 features with MbedTLS build, we need this patch on top of MbedTLS v3.6.0 before it is merged into the next MbedTLS LTS release. Signed-off-by: Raymond Mao <raymond....@linaro.org> --- Changes in v2 - None. Changes in v3 - Update commit message. Changes in v4 - None. Changes in v5 - None. .../external/mbedtls/include/mbedtls/oid.h | 5 +++++ .../external/mbedtls/include/mbedtls/pkcs7.h | 11 +++++++++++ lib/mbedtls/external/mbedtls/library/pkcs7.c | 19 ++++++++++++++++++- 3 files changed, 34 insertions(+), 1 deletion(-) diff --git a/lib/mbedtls/external/mbedtls/include/mbedtls/oid.h b/lib/mbedtls/external/mbedtls/include/mbedtls/oid.h index 2ee982808fa..43cef99f1e3 100644 --- a/lib/mbedtls/external/mbedtls/include/mbedtls/oid.h +++ b/lib/mbedtls/external/mbedtls/include/mbedtls/oid.h @@ -238,6 +238,11 @@ #define MBEDTLS_OID_RSA_SHA_OBS "\x2B\x0E\x03\x02\x1D" #define MBEDTLS_OID_PKCS9_EMAIL MBEDTLS_OID_PKCS9 "\x01" /**< emailAddress AttributeType ::= { pkcs-9 1 } */ +#define MBEDTLS_OID_PKCS9_CONTENTTYPE MBEDTLS_OID_PKCS9 "\x03" /**< contentType AttributeType ::= { pkcs-9 3 } */ +#define MBEDTLS_OID_PKCS9_MESSAGEDIGEST MBEDTLS_OID_PKCS9 "\x04" /**< messageDigest AttributeType ::= { pkcs-9 4 } */ +#define MBEDTLS_OID_PKCS9_SIGNINGTIME MBEDTLS_OID_PKCS9 "\x05" /**< signingTime AttributeType ::= { pkcs-9 5 } */ +#define MBEDTLS_OID_PKCS9_SMIMECAP MBEDTLS_OID_PKCS9 "\x0f" /**< smimeCapabilites AttributeType ::= { pkcs-9 15 } */ +#define MBEDTLS_OID_PKCS9_SMIMEAA MBEDTLS_OID_PKCS9 "\x10\x02\x0b" /**< smimeCapabilites AttributeType ::= { pkcs-9 16 2 11} */ /* RFC 4055 */ #define MBEDTLS_OID_RSASSA_PSS MBEDTLS_OID_PKCS1 "\x0a" /**< id-RSASSA-PSS ::= { pkcs-1 10 } */ diff --git a/lib/mbedtls/external/mbedtls/include/mbedtls/pkcs7.h b/lib/mbedtls/external/mbedtls/include/mbedtls/pkcs7.h index 9e29b74af70..a88a5e858fc 100644 --- a/lib/mbedtls/external/mbedtls/include/mbedtls/pkcs7.h +++ b/lib/mbedtls/external/mbedtls/include/mbedtls/pkcs7.h @@ -102,6 +102,16 @@ typedef enum { } mbedtls_pkcs7_type; +/* + * Authenticate Attributes for MicroSoft Authentication Code using in U-Boot + * Secure Boot + */ +typedef struct mbedtls_pkcs7_authattrs { + size_t data_len; + void *data; +} +mbedtls_pkcs7_authattrs; + /** * Structure holding PKCS #7 signer info */ @@ -113,6 +123,7 @@ typedef struct mbedtls_pkcs7_signer_info { mbedtls_x509_buf MBEDTLS_PRIVATE(alg_identifier); mbedtls_x509_buf MBEDTLS_PRIVATE(sig_alg_identifier); mbedtls_x509_buf MBEDTLS_PRIVATE(sig); + mbedtls_pkcs7_authattrs authattrs; struct mbedtls_pkcs7_signer_info *MBEDTLS_PRIVATE(next); } mbedtls_pkcs7_signer_info; diff --git a/lib/mbedtls/external/mbedtls/library/pkcs7.c b/lib/mbedtls/external/mbedtls/library/pkcs7.c index 0c2436b56b7..da73fb341d6 100644 --- a/lib/mbedtls/external/mbedtls/library/pkcs7.c +++ b/lib/mbedtls/external/mbedtls/library/pkcs7.c @@ -288,6 +288,7 @@ static int pkcs7_get_signer_info(unsigned char **p, unsigned char *end, unsigned char *end_signer, *end_issuer_and_sn; int asn1_ret = 0, ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED; size_t len = 0; + unsigned char *tmp_p; asn1_ret = mbedtls_asn1_get_tag(p, end, &len, MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE); @@ -349,7 +350,23 @@ static int pkcs7_get_signer_info(unsigned char **p, unsigned char *end, goto out; } - /* Assume authenticatedAttributes is nonexistent */ + /* Save authenticatedAttributes if present */ + if (*p < end_signer && + **p == (MBEDTLS_ASN1_CONTEXT_SPECIFIC | MBEDTLS_ASN1_CONSTRUCTED | 0)) { + tmp_p = *p; + + ret = mbedtls_asn1_get_tag(p, end_signer, &len, + MBEDTLS_ASN1_CONTEXT_SPECIFIC | + MBEDTLS_ASN1_CONSTRUCTED | 0); + if (ret != 0) { + goto out; + } + + signer->authattrs.data = tmp_p; + signer->authattrs.data_len = len + *p - tmp_p; + *p += len; + } + ret = pkcs7_get_digest_algorithm(p, end_signer, &signer->sig_alg_identifier); if (ret != 0) { goto out; -- 2.25.1
