Help Center/ Atlas 300 Application (Model 3000)/ Matrix API Reference/ Auxiliary APIs/ Others (C++ Language)/ Graph::SetPublicKeyForSignatureEncryption
Updated on 2022-03-13 GMT+08:00
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Graph::SetPublicKeyForSignatureEncryption

Set a public key which is used to verify the digital signature of the *.so file to be loaded by the Matrix on the device side. This API must be called before the creation of a graph. This API is defined in graph.h.

The SHA256withRSA algorithm is used for digital signature. This component provides only the digital signature verification function. You need to sign the required SO file based on this algorithm. The signature file must be stored in the same directory as the SO file on the host side. The signature file name is "SO file name+.signature". For example, if the SO file name is libhosttodevice.so, the signature file name is libhosttodevice.so.signature.

If Graph::SetPublicKeyForSignatureEncryption is not called or its return value is not HIAI_OK, the public key cannot be set in the Matrix, and the signature verification mechanism will not be enabled on the device side. As a result, the *.so file that may be tampered cannot be identified by using the digital signature.

Syntax

static HIAI_StatusT Graph::SetPublicKeyForSignatureEncryption(const std::string& publicKey)

Parameter Description

Parameter

Description

Value Range

publicKey

Public key required for digital signature verification

-

Return Value

For details about the returned error codes, see "Error Codes."

Error Codes

No.

Error Code

Description

1

HIAI_OK

The running is OK.

 
std::string publicKey =
"-----BEGIN RSA PUBLIC KEY-----\n"
"MIIBCAKCAQEAt+kdmu8CdViw2xHlh/JWXOl/0AitDgYGd+9RadULGZmj0tt/UQLv\n"
"EYPZaXC8E0a9e97kqfg/ZHinu04XG5RhXv2J0kwkhuBAeCCllefvrQy5OBRqdLYq\n"
"EZe8wUO0adSMDsLbPL52b+NdO9/zX+MUzvsBzitWJbiH96s4xCiEERX87/uQfr6F\n"
"lHLtrNtooeF2VmxOm3n0yzh4kcSouLgb/O0+v0I+fnR+CTNG95IvzDNOYLWD6ZkL\n"
"c7JyIYFZA0CNx9SlPhqbrfjOV5XSG3g3CW0TopUDfHyhAgZt5vACMpeDDx+89tg2\n"
"RfT4M9DH/qKzkLlOURvsMShRMD6/PwzsPwIBAw==\n"
"-----END RSA PUBLIC KEY-----";
auto ret = Graph::SetPublicKeyForSignatureEncryption(publicKey);
Parent topic: Others (C++ Language)