mirror of
https://github.com/guanzhi/GmSSL.git
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43 lines
1.1 KiB
C
43 lines
1.1 KiB
C
/*
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* Copyright 2014-2022 The GmSSL Project. All Rights Reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the License); you may
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* not use this file except in compliance with the License.
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdint.h>
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#include <gmssl/rsa.h>
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#include <gmssl/asn1.h>
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#include <gmssl/error.h>
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int rsa_public_key_print(FILE *fp, int fmt, int ind, const char *label, const uint8_t *a, size_t alen)
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{
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const uint8_t *d;
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size_t dlen;
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const uint8_t *p;
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size_t len;
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int val;
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format_print(fp, fmt, ind, "%s\n", label);
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ind += 4;
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if (asn1_sequence_from_der(&d, &dlen, &a, &alen) != 1) goto err;
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if (asn1_integer_from_der(&p, &len, &d, &dlen) != 1) goto err;
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format_bytes(fp, fmt, ind, "modulus", p, len);
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if (asn1_int_from_der(&val, &d, &dlen) != 1) goto err;
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format_print(fp, fmt, ind, "publicExponent: %d\n",val);
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if (asn1_length_is_zero(dlen) != 1) goto err;
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if (asn1_length_is_zero(alen) != 1) goto err;
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return 1;
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err:
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error_print();
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return -1;
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}
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