1# Certificate Error Codes 2 3<!--Kit: Device Certificate Kit--> 4<!--Subsystem: Security--> 5<!--Owner: @zxz--3--> 6<!--Designer: @lanming--> 7<!--Tester: @PAFT--> 8<!--Adviser: @zengyawen--> 9 10> **NOTE** 11> 12> This topic describes only module-specific error codes. For details about universal error codes, see [Universal Error Codes](../errorcode-universal.md). 13 14## 19020001 Memory Error 15 16**Error Message** 17 18Memory error. 19 20**Possible Causes** 21 22The memory allocation failed. 23 24**Solution** 25 261. Check whether the system is running properly. 272. Check whether the service data is too long. 28 29## 19020002 Runtime Error 30 31**Error Message** 32 33Runtime error. 34 35**Possible Causes** 36 37An unexpected error occurs. 38 39**Solution** 40 41Check whether the system is running properly. 42 43## 19020003 Parameter Check Failure 44 45**Error Message** 46 47Indicates that parameter check failed. 48 49**Possible Causes** 50 51The input value is out of range. 52 53**Solution** 54 55Check whether the input parameters are correct. 56 57## 19030001 Crypto Operation Error 58 59**Error Message** 60 61Crypto operation error. 62 63**Possible Causes** 64 65An error occurs when the cryptography framework interacts with a third-party algorithm library. 66 67**Solution** 68 691. Check whether the input parameters are correct. 702. Check whether the third-party algorithm library functions properly. 71 72## 19030002 Certificate Signature Verification Failed 73 74**Error Message** 75 76The certificate signature verification failed. 77 78**Possible Causes** 79 80Incorrect certificate signature information is found during the signature verification. 81 82**Solution** 83 84Check whether the certificate is correct. 85 86## 19030003 Certificate Has Not Taken Effect 87 88**Error Message** 89 90The certificate has not taken effect. 91 92**Possible Causes** 93 94The certificate has not taken effect. The effective time of the certificate is later than the current system time or the time specified by the service. 95 96**Solution** 97 981. Check whether the certificate is correct. 992. Check whether the system time is correct. 1003. Compare the certificate effective time with the current system time to determine whether the certificate has taken effect. 101 102## 19030004 Certificate Expired 103 104**Error Message** 105 106The certificate has expired. 107 108**Possible Causes** 109 110The certificate has expired. The certificate expiration time is earlier than the current system time or the time specified by the service. 111 112**Solution** 113 1141. Check whether the certificate is correct. 1152. Check whether the system time is correct. 1163. Compare the certificate expiration time with the current system time to determine whether the certificate has expired. 117 118## 19030005 Failed to Obtain the Certificate Issuer 119 120**Error Message** 121 122Failed to obtain the certificate issuer. 123 124**Possible Causes** 125 126The certificate issuer cannot be obtained during certificate verification. 127 128**Solution** 129 130Check whether the certificate is correct. 131 132## 19030006 Key Cannot be Used for Signing a Certificate 133 134**Error Message** 135 136The key cannot be used for signing a certificate. 137 138**Possible Causes** 139 140The key cannot be used to sign certificates. 141 142**Solution** 143 144Check whether the certificate is correct. 145 146## 19030007 Key Cannot be Used for Digital Signature 147 148**Error Message** 149 150The key cannot be used for digital signature. 151 152**Possible Causes** 153 154The key cannot be used for digital signature. 155 156**Solution** 157 158Check whether the certificate is correct. 159 160## 19030008 Incorrect Private Key Password 161 162**Error Message** 163 164The password may be wrong. 165 166**Possible Causes** 167 168The password for the private key is incorrect. 169 170**Solution** 171 172Check that the private key password is correct. 173