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Calculate padding length

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This commit is contained in:
olszomal
2023-03-29 14:05:03 +02:00
committed by Michał Trojnara
parent 09555e8c05
commit dd365d68c4
2 changed files with 7 additions and 8 deletions
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4
cab.c
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@ -529,7 +529,7 @@ static int cab_append_pkcs7(FILE_FORMAT_CTX *ctx, BIO *outdata, PKCS7 *p7)
}
i2d_PKCS7(p7, &p);
p -= len;
padlen = (8 - len % 8) % 8;
padlen = len % 8 ? 8 - len % 8 : 0;
BIO_write(outdata, p, len);
/* pad (with 0's) asn1 blob to 8 byte boundary */
if (padlen > 0) {
@ -562,7 +562,7 @@ static void cab_update_data_size(FILE_FORMAT_CTX *ctx, BIO *outdata, PKCS7 *p7)
}
(void)BIO_seek(outdata, 0x30);
len = i2d_PKCS7(p7, NULL);
padlen = (8 - len % 8) % 8;
padlen = len % 8 ? 8 - len % 8 : 0;
PUT_UINT32_LE(len + padlen, buf);
BIO_write(outdata, buf, 4);
}