u32 GetCertSize(u8 *cert)
{
u32 sign_size = 0;
u32 sign_padlen = 0;
GetCertSigSectionSizes(&sign_size,&sign_padlen,cert);
if(!sign_size || !sign_padlen)
return 0;
return sizeof(u32) + sign_size + sign_padlen + sizeof(cert_hdr) + GetCertPubkSectionSize(GetCertPubkType(cert));
}
bool VerifyCert(u8 *cert, u8 *pubk)
{
if(!GetCertHdr(cert))
return false;
u8 *signature = (cert+sizeof(u32));
u8 *data = (u8*)GetCertHdr(cert);
u32 datasize = sizeof(cert_hdr) + GetCertPubkSectionSize(GetCertPubkType(cert));
return RsaSignVerify(data,datasize,signature,pubk,NULL,u8_to_u32(cert,BE),CTR_RSA_VERIFY);
}
u32 GetCertSize(u8 *cert)
{
u32 SigSize = 0;
u32 SigPadding = 0;
GetCertSigSectionSizes(&SigSize,&SigPadding,cert);
if(!SigSize || !SigPadding) return 0;
Cert_Struct *certcore = (Cert_Struct*)(cert+4+SigSize+SigPadding);
u32 PubKSectionSize = GetCertPubkSectionSize((pubk_types)u8_to_u32(certcore->KeyType,BE));
return (4+SigSize+SigPadding+sizeof(Cert_Struct)+PubKSectionSize);
}
bool VerifyCert(u8 *cert, u8 *pubk)
{
u32 SigSize = 0;
u32 SigPadding = 0;
GetCertSigSectionSizes(&SigSize,&SigPadding,cert);
if(!SigSize || !SigPadding) return 0;
u8 *signature = (cert+4);
u8 *data = (cert+4+SigSize+SigPadding);
u32 datasize = sizeof(Cert_Struct) + GetCertPubkSectionSize(GetCertPubkType(cert));
int result = ctr_sig(data,datasize,signature,pubk,NULL,u8_to_u32(cert,BE),CTR_RSA_VERIFY);
if(result == 0) return true;
else return false;
}
