134 lines
3.4 KiB
C
134 lines
3.4 KiB
C
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/* dh_key.h */
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define DH_MAX_LENGTH 0x00000200 // in bytes, 512 bytes, 4096 bits
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#define DH_KEYSIZE_INC 0x40
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/*********************************/
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/* Definitions */
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/*********************************/
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#define DH_PUBLIC_MAGIC 0x31484400
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#define DH_PRIVATE_MAGIC 0x32484400
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#define DH_PUBLIC_MAGIC_VER3 0x33484400
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#define DH_PRIV_MAGIC_VER3 0x34484400
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/*********************************/
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/* Structure Definitions */
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/*********************************/
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typedef dsa_private_t DHKey_t; // use a DSA key since X 9.42 requires key
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// gen like DSA
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/*
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typedef struct {
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ALG_ID Algid; // algorithm type of the key (SF or EPHEM)
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DH_PRIV_KEY Priv;
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} DHKey_t;
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*/
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/*********************************/
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/* Function Definitions */
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/*********************************/
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// Initialize DH key
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DWORD
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initKeyDH(
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IN Context_t *pContext,
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IN OUT DHKey_t *pDH,
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IN ALG_ID Algid,
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IN DWORD dwFlags,
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IN BOOL fAnyLength);
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DHKey_t *allocDHKey ();
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void freeKeyDH (DHKey_t *dh);
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// Get the DH parameters
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DWORD getDHParams (
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IN DHKey_t *dh,
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IN DWORD param,
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OUT BYTE *data,
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OUT DWORD *len
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);
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// Set the DH parameters
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DWORD setDHParams (
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IN OUT DHKey_t *pDH,
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IN DWORD dwParam,
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IN CONST BYTE *pbData,
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IN OUT Context_t *pContext
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);
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// Generate a dh key
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DWORD dhGenerateKey (
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IN Context_t *pContext,
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IN OUT DHKey_t *pDH);
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DWORD dhDeriveKey (DHKey_t *dh, BYTE *data, DWORD len);
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// Export the DH key in blob format
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DWORD exportDHKey (
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IN Context_t *pContext,
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IN DHKey_t *pDH,
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IN ALG_ID Algid,
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IN DWORD dwFlags,
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IN DWORD dwReserved,
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IN DWORD dwBlobType,
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OUT BYTE *pbData,
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OUT DWORD *pcbData,
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IN BOOL fInternal
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);
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DWORD DHPrivBlobToKey(
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IN Context_t *pContext,
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IN BLOBHEADER *pBlob,
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IN DWORD cbBlob,
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IN DWORD dwKeysetType,
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OUT Key_t *pPrivKey
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);
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// Import the blob into DH key
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DWORD importDHKey(
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IN OUT Key_t *pPrivKey,
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IN Context_t *pContext,
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IN BYTE *pbBlob,
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IN DWORD cbBlob,
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OUT Key_t *pKey,
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IN DWORD dwKeysetType,
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IN BOOL fInternal
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);
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void copyDHPubKey(
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IN DHKey_t *pDH1,
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IN DHKey_t *pDH2
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);
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DWORD copyDHKey(
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IN DHKey_t *pDH1,
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IN DHKey_t *pDH2,
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IN ALG_ID Algid,
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IN Context_t *pContext
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);
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//
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// Function : UseDHKey
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//
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// Description : This function creates an ephemeral DH key and then generates
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// two agreed keys, thus simulating a DH exchange. If the
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// agreed keys are not the same then the function fails.
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//
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DWORD UseDHKey(
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IN Context_t *pContext,
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IN PEXPO_OFFLOAD_STRUCT pOffloadInfo,
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IN DHKey_t *pDH
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);
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#ifdef __cplusplus
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}
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#endif
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