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  • Teketel Sawo thinks this is interesting:

typedef enum { SPC_OCSPRESULT_ERROR_INVALIDRESPONSE = -12, SPC_OCSPRESULT_ERROR_CONNECTFAILURE = -11, SPC_OCSPRESULT_ERROR_SIGNFAILURE = -10, SPC_OCSPRESULT_ERROR_BADOCSPADDRESS = -9, SPC_OCSPRESULT_ERROR_OUTOFMEMORY = -8, SPC_OCSPRESULT_ERROR_UNKNOWN = -7, SPC_OCSPRESULT_ERROR_UNAUTHORIZED = -6, SPC_OCSPRESULT_ERROR_SIGREQUIRED = -5, SPC_OCSPRESULT_ERROR_TRYLATER = -3, SPC_OCSPRESULT_ERROR_INTERNALERROR = -2, SPC_OCSPRESULT_ERROR_MALFORMEDREQUEST = -1, SPC_OCSPRESULT_CERTIFICATE_VALID = 0, SPC_OCSPRESULT_CERTIFICATE_REVOKED = 1 } spc_ocspresult_t;

From

Cover of Secure Programming Cookbook for C and C++

Note

ocsp check status enum