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65 lines
1.4 KiB
C
65 lines
1.4 KiB
C
//
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// Cryptographic support functions for PDFio.
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//
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// Copyright © 2021 by Michael R Sweet.
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//
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// Licensed under Apache License v2.0. See the file "LICENSE" for more
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// information.
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//
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//
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// Include necessary headers...
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//
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#include "pdfio-private.h"
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//
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// '_pdfioCryptoMakeReader()' - Setup a cryptographic context and callback for reading.
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//
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_pdfio_crypto_cb_t // O - Decryption callback or `NULL` for none
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_pdfioCryptoMakeReader(
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pdfio_file_t *pdf, // I - PDF file
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pdfio_obj_t *obj, // I - PDF object
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_pdfio_crypto_ctx_t *ctx, // I - Pointer to crypto context
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uint8_t *iv, // I - Buffer for initialization vector
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size_t *ivlen) // IO - Size of initialization vector
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{
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(void)pdf;
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(void)obj;
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(void)ctx;
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(void)iv;
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// No decryption...
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*ivlen = 0;
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return (NULL);
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}
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//
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// '_pdfioCryptoMakeWriter()' - Setup a cryptographic context and callback for writing.
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//
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_pdfio_crypto_cb_t // O - Encryption callback or `NULL` for none
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_pdfioCryptoMakeWriter(
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pdfio_file_t *pdf, // I - PDF file
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pdfio_obj_t *obj, // I - PDF object
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_pdfio_crypto_ctx_t *ctx, // I - Pointer to crypto context
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uint8_t *iv, // I - Buffer for initialization vector
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size_t *ivlen) // IO - Size of initialization vector
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{
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(void)pdf;
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(void)obj;
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(void)ctx;
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(void)iv;
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// No encryption...
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*ivlen = 0;
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return (NULL);
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}
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