makerom v0.1

2026-07-04 00:39:03 +00:00 · 2014-02-16 16:55:00 +08:00
commit 0155b2098e
151 changed files with 67007 additions and 0 deletions
@@ -0,0 +1,139 @@
+#include "lib.h"
+#include "certs.h"
+
+// Cert Sizes
+
+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);
+}
+
+void GetCertSigSectionSizes(u32 *SigSize, u32 *SigPadding, u8 *cert)
+{
+	sig_types sig = (sig_types)u8_to_u32(cert,BE);
+	switch(sig){
+		case RSA_4096_SHA1 :
+			*SigSize = 0x200;
+			*SigPadding = 0x3C;
+			break;
+		case RSA_2048_SHA1 :
+			*SigSize = 0x100;
+			*SigPadding = 0x3C;
+			break;
+		case ECC_SHA1 :
+			*SigSize = 0x3C;
+			*SigPadding = 0x40;
+			break;
+		case RSA_4096_SHA256 :
+			*SigSize = 0x200;
+			*SigPadding = 0x3C;
+			break;
+		case RSA_2048_SHA256 :
+			*SigSize = 0x100;
+			*SigPadding = 0x3C;
+			break;
+		case ECC_SHA256 :
+			*SigSize = 0x3C;
+			*SigPadding = 0x40;
+			break;
+		default :
+			*SigSize = 0;
+			*SigPadding = 0;
+			break;
+	}
+	return;
+}
+
+u32 GetCertPubkSectionSize(pubk_types type)
+{
+	switch(type){
+		case RSA_4096_PUBK : return sizeof(rsa_4096_pubk_struct);
+		case RSA_2048_PUBK : return sizeof(rsa_2048_pubk_struct);
+		case ECC_PUBK : return sizeof(ecc_pubk_struct);
+		default : return 0;
+	}
+}
+
+// Issuer/Name Functions
+u8 *GetCertIssuer(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);
+	return certcore->Issuer;
+}
+u8 *GetCertName(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);
+	return certcore->Name;
+}
+
+int GenCertChildIssuer(u8 *dest, u8 *cert)
+{
+	u8 *Issuer = GetCertIssuer(cert);
+	u8 *Name = GetCertName(cert);
+
+	u32 out_size = strlen((char*)Issuer) + strlen((char*)Name) + 1;
+	if(out_size > 0x40) return MEM_ERROR;
+
+	memcpy(dest,Issuer,strlen((char*)Issuer));
+	dest[strlen((char*)Issuer)] = '-';
+	memcpy((dest+strlen((char*)Issuer)+1),Name,strlen((char*)Name));
+	return 0;
+}
+
+// Pubk
+pubk_types GetCertPubkType(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);
+
+	return (pubk_types)u8_to_u32(certcore->KeyType,BE);
+}
+u8 *GetCertPubk(u8 *cert)
+{
+	u32 SigSize = 0;
+	u32 SigPadding = 0;
+	GetCertSigSectionSizes(&SigSize,&SigPadding,cert);
+	if(!SigSize || !SigPadding) return 0;
+	return (cert+4+SigSize+SigPadding+sizeof(Cert_Struct));
+}
+
+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;
+}