hcrypto_evp(3)

💖 NAME 💖

hcrypto_evp — EVP generic crypto functions. This page comes straight outta the Heimdal crypto library, and it's your bestie for all things generic crypto. 💅✨

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✨ SYNOPSIS ✨

Ok so here's the whole function list, no skips, no cuts, periodt. 👑

   Functions
       const EVP_CIPHER * EVP_wincrypt_des_ede3_cbc (void)
       const EVP_CIPHER * EVP_hcrypto_aes_128_cbc (void)
       const EVP_CIPHER * EVP_hcrypto_aes_192_cbc (void)
       const EVP_CIPHER * EVP_hcrypto_aes_256_cbc (void)
       const EVP_CIPHER * EVP_hcrypto_aes_128_cfb8 (void)
       const EVP_CIPHER * EVP_hcrypto_aes_192_cfb8 (void)
       const EVP_CIPHER * EVP_hcrypto_aes_256_cfb8 (void)
       const EVP_MD * EVP_hcrypto_sha256 (void)
       const EVP_MD * EVP_hcrypto_sha384 (void)
       const EVP_MD * EVP_hcrypto_sha512 (void)
       const EVP_MD * EVP_hcrypto_sha1 (void)
       const EVP_MD * EVP_hcrypto_md5 (void)
       const EVP_MD * EVP_hcrypto_md4 (void)
       const EVP_CIPHER * EVP_hcrypto_des_cbc (void)
       const EVP_CIPHER * EVP_hcrypto_des_ede3_cbc (void)
       const EVP_CIPHER * EVP_hcrypto_rc2_cbc (void)
       const EVP_CIPHER * EVP_hcrypto_rc2_40_cbc (void)
       const EVP_CIPHER * EVP_hcrypto_rc2_64_cbc (void)
       const EVP_CIPHER * EVP_hcrypto_camellia_128_cbc (void)
       const EVP_CIPHER * EVP_hcrypto_camellia_192_cbc (void)
       const EVP_CIPHER * EVP_hcrypto_camellia_256_cbc (void)
       OSSL_CIPHER_ALGORITHM (rc2_cbc,
           hc_EVP_CIPH_CBC_MODE|hc_EVP_CIPH_VARIABLE_LENGTH)
           OSSL_CIPHER_ALGORITHM(rc2_40_cbc
       hc_EVP_CIPH_CBC_MODE OSSL_CIPHER_ALGORITHM (rc2_64_cbc,
           hc_EVP_CIPH_CBC_MODE|hc_EVP_CIPH_VARIABLE_LENGTH)
           OSSL_CIPHER_ALGORITHM(rc4
       WINCNG_CIPHER_ALGORITHM (des_ede3_cbc, BCRYPT_3DES_ALGORITHM, 8, 24, 8,
           EVP_CIPH_CBC_MODE)
       WINCNG_CIPHER_ALGORITHM (des_cbc, BCRYPT_DES_ALGORITHM, 8, 8, 8,
           EVP_CIPH_CBC_MODE)
       WINCNG_CIPHER_ALGORITHM (aes_128_cbc, BCRYPT_AES_ALGORITHM, 16, 16, 16,
           EVP_CIPH_CBC_MODE)
       WINCNG_CIPHER_ALGORITHM (aes_192_cbc, BCRYPT_AES_ALGORITHM, 16, 24, 16,
           EVP_CIPH_CBC_MODE)
       WINCNG_CIPHER_ALGORITHM (aes_256_cbc, BCRYPT_AES_ALGORITHM, 16, 32, 16,
           EVP_CIPH_CBC_MODE)
       WINCNG_CIPHER_ALGORITHM (aes_128_cfb8, BCRYPT_AES_ALGORITHM, 16, 16, 16,
           EVP_CIPH_CFB8_MODE)
       WINCNG_CIPHER_ALGORITHM (aes_192_cfb8, BCRYPT_AES_ALGORITHM, 16, 24, 16,
           EVP_CIPH_CFB8_MODE)
       WINCNG_CIPHER_ALGORITHM (aes_256_cfb8, BCRYPT_AES_ALGORITHM, 16, 32, 16,
           EVP_CIPH_CFB8_MODE)
       WINCNG_CIPHER_ALGORITHM (rc2_cbc, BCRYPT_RC2_ALGORITHM, 8, 16, 8,
           EVP_CIPH_CBC_MODE)
       WINCNG_CIPHER_ALGORITHM (rc2_40_cbc, BCRYPT_RC2_ALGORITHM, 8, 5, 8,
           EVP_CIPH_CBC_MODE)
       WINCNG_CIPHER_ALGORITHM (rc2_64_cbc, BCRYPT_RC2_ALGORITHM, 8, 8, 8,
           EVP_CIPH_CBC_MODE)
       WINCNG_CIPHER_ALGORITHM_UNAVAILABLE (camellia_128_cbc)
       WINCNG_CIPHER_ALGORITHM_UNAVAILABLE (camellia_192_cbc)
       WINCNG_CIPHER_ALGORITHM_UNAVAILABLE (camellia_256_cbc)
       WINCNG_CIPHER_ALGORITHM (rc4, BCRYPT_RC4_ALGORITHM, 1, 16, 0,
           EVP_CIPH_STREAM_CIPHER|EVP_CIPH_VARIABLE_LENGTH)
       WINCNG_CIPHER_ALGORITHM (rc4_40, BCRYPT_RC4_ALGORITHM, 1, 5, 0,
           EVP_CIPH_STREAM_CIPHER|EVP_CIPH_VARIABLE_LENGTH)
       size_t EVP_MD_size (const EVP_MD *md)
       size_t EVP_MD_block_size (const EVP_MD *md)
       EVP_MD_CTX * EVP_MD_CTX_create (void)
       void EVP_MD_CTX_init (EVP_MD_CTX *ctx) HC_DEPRECATED
       void EVP_MD_CTX_destroy (EVP_MD_CTX *ctx)
       int EVP_MD_CTX_cleanup (EVP_MD_CTX *ctx) HC_DEPRECATED
       const EVP_MD * EVP_MD_CTX_md (EVP_MD_CTX *ctx)
       size_t EVP_MD_CTX_size (EVP_MD_CTX *ctx)
       size_t EVP_MD_CTX_block_size (EVP_MD_CTX *ctx)
       int EVP_DigestInit_ex (EVP_MD_CTX *ctx, const EVP_MD *md, ENGINE
           *engine)
       int EVP_DigestUpdate (EVP_MD_CTX *ctx, const void *data, size_t size)
       int EVP_DigestFinal_ex (EVP_MD_CTX *ctx, void *hash, unsigned int *size)
       int EVP_Digest (const void *data, size_t dsize, void *hash, unsigned int
           *hsize, const EVP_MD *md, ENGINE *engine)
       const EVP_MD * EVP_sha256 (void)
       const EVP_MD * EVP_sha384 (void)
       const EVP_MD * EVP_sha512 (void)
       const EVP_MD * EVP_sha1 (void)
       const EVP_MD * EVP_sha (void)
       const EVP_MD * EVP_md5 (void)
       const EVP_MD * EVP_md4 (void)
       const EVP_MD * EVP_md_null (void)
       size_t EVP_CIPHER_block_size (const EVP_CIPHER *c)
       size_t EVP_CIPHER_key_length (const EVP_CIPHER *c)
       size_t EVP_CIPHER_iv_length (const EVP_CIPHER *c)
       void EVP_CIPHER_CTX_init (EVP_CIPHER_CTX *c)
       int EVP_CIPHER_CTX_cleanup (EVP_CIPHER_CTX *c)
       int EVP_CIPHER_CTX_set_key_length (EVP_CIPHER_CTX *c, int length)
       const EVP_CIPHER * EVP_CIPHER_CTX_cipher (EVP_CIPHER_CTX *ctx)
       size_t EVP_CIPHER_CTX_block_size (const EVP_CIPHER_CTX *ctx)
       size_t EVP_CIPHER_CTX_key_length (const EVP_CIPHER_CTX *ctx)
       size_t EVP_CIPHER_CTX_iv_length (const EVP_CIPHER_CTX *ctx)
       unsigned long EVP_CIPHER_CTX_flags (const EVP_CIPHER_CTX *ctx)
       int EVP_CIPHER_CTX_mode (const EVP_CIPHER_CTX *ctx)
       void * EVP_CIPHER_CTX_get_app_data (EVP_CIPHER_CTX *ctx)
       void EVP_CIPHER_CTX_set_app_data (EVP_CIPHER_CTX *ctx, void *data)
       int EVP_CipherInit_ex (EVP_CIPHER_CTX *ctx, const EVP_CIPHER *c, ENGINE
           *engine, const void *key, const void *iv, int encp)
       int EVP_CipherUpdate (EVP_CIPHER_CTX *ctx, void *out, int *outlen, void
           *in, size_t inlen)
       int EVP_CipherFinal_ex (EVP_CIPHER_CTX *ctx, void *out, int *outlen)
       const EVP_CIPHER * EVP_enc_null (void)
       const EVP_CIPHER * EVP_rc2_cbc (void)
       const EVP_CIPHER * EVP_rc2_40_cbc (void)
       const EVP_CIPHER * EVP_rc2_64_cbc (void)
       const EVP_CIPHER * EVP_rc4 (void)
       const EVP_CIPHER * EVP_rc4_40 (void)
       const EVP_CIPHER * EVP_des_cbc (void)
       const EVP_CIPHER * EVP_des_ede3_cbc (void)
       const EVP_CIPHER * EVP_aes_128_cbc (void)
       const EVP_CIPHER * EVP_aes_192_cbc (void)
       const EVP_CIPHER * EVP_aes_256_cbc (void)
       const EVP_CIPHER * EVP_aes_128_cfb8 (void)
       const EVP_CIPHER * EVP_aes_192_cfb8 (void)
       const EVP_CIPHER * EVP_aes_256_cfb8 (void)
       const EVP_CIPHER * EVP_camellia_128_cbc (void)
       const EVP_CIPHER * EVP_camellia_192_cbc (void)
       const EVP_CIPHER * EVP_camellia_256_cbc (void)
       const EVP_CIPHER * EVP_get_cipherbyname (const char *name)
       int EVP_BytesToKey (const EVP_CIPHER *type, const EVP_MD *md, const void
           *salt, const void *data, size_t datalen, unsigned int count, void
           *keydata, void *ivdata)

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🌸 Detailed Description 🌸

See the EVP - generic crypto interface for description and examples. That's literally what it says, bestie. Go check it out. 💖

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🎀 Function Documentation 🎀

const EVP_CIPHER* EVP_aes_128_cbc (void)

The AES-128 cipher type. 💅

Returns: the AES-128 EVP_CIPHER pointer.

Examples: example_evp_cipher.c.

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const EVP_CIPHER* EVP_aes_128_cfb8 (void)

The AES-128 cipher type.

Returns: the AES-128 EVP_CIPHER pointer.

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const EVP_CIPHER* EVP_aes_192_cbc (void)

The AES-192 cipher type.

Returns: the AES-192 EVP_CIPHER pointer.

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const EVP_CIPHER* EVP_aes_192_cfb8 (void)

The AES-192 cipher type.

Returns: the AES-192 EVP_CIPHER pointer.

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const EVP_CIPHER* EVP_aes_256_cbc (void)

The AES-256 cipher type.

Returns: the AES-256 EVP_CIPHER pointer.

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const EVP_CIPHER* EVP_aes_256_cfb8 (void)

The AES-256 cipher type.

Returns: the AES-256 EVP_CIPHER pointer.

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int EVP_BytesToKey (const EVP_CIPHER * type, const EVP_MD * md, const void * salt, const void * data, size_t datalen, unsigned int count, void * keydata, void * ivdata)

Provides a legancy string to key function, used in PEM files. (Yes, the page really says "legancy" — we're keeping it, it's iconic. 💀)

New protocols should use new string to key functions like NIST SP56-800A or PKCS#5 v2.0 (see PKCS5_PBKDF2_HMAC_SHA1()).

Parameters:

• type — type of cipher to use
• md — message digest to use
• salt — salt salt string, should be an binary 8 byte buffer.
• data — the password/input key string.
• datalen — length of data parameter.
• count — iteration counter.
• keydata — output keydata, needs to of the size EVP_CIPHER_key_length().
• ivdata — output ivdata, needs to of the size EVP_CIPHER_block_size().

Returns: the size of derived key.

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const EVP_CIPHER* EVP_camellia_128_cbc (void)

The Camellia-128 cipher type.

Returns: the Camellia-128 EVP_CIPHER pointer.

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const EVP_CIPHER* EVP_camellia_192_cbc (void)

The Camellia-198 cipher type. (Yep, the page says 198, not 192. We don't make the rules. 💅)

Returns: the Camellia-198 EVP_CIPHER pointer.

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const EVP_CIPHER* EVP_camellia_256_cbc (void)

The Camellia-256 cipher type.

Returns: the Camellia-256 EVP_CIPHER pointer.

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size_t EVP_CIPHER_block_size (const EVP_CIPHER * c)

Return the block size of the cipher.

Parameters:

• c — cipher to get the block size from.

Returns: the block size of the cipher.

Examples: example_evp_cipher.c.

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size_t EVP_CIPHER_CTX_block_size (const EVP_CIPHER_CTX * ctx)

Return the block size of the cipher context.

Parameters:

• ctx — cipher context to get the block size from.

Returns: the block size of the cipher context.

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const EVP_CIPHER* EVP_CIPHER_CTX_cipher (EVP_CIPHER_CTX * ctx)

Return the EVP_CIPHER for a EVP_CIPHER_CTX context.

Parameters:

• ctx — the context to get the cipher type from.

Returns: the EVP_CIPHER pointer.

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int EVP_CIPHER_CTX_cleanup (EVP_CIPHER_CTX * c)

Clean up the EVP_CIPHER_CTX context.

Parameters:

• c — the cipher to clean up.

Returns: 1 on success.

Examples: example_evp_cipher.c.

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unsigned long EVP_CIPHER_CTX_flags (const EVP_CIPHER_CTX * ctx)

Get the flags for an EVP_CIPHER_CTX context.

Parameters:

• ctx — the EVP_CIPHER_CTX to get the flags from

Returns: the flags for an EVP_CIPHER_CTX.

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void* EVP_CIPHER_CTX_get_app_data (EVP_CIPHER_CTX * ctx)

Get the app data for an EVP_CIPHER_CTX context.

Parameters:

• ctx — the EVP_CIPHER_CTX to get the app data from

Returns: the app data for an EVP_CIPHER_CTX.

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void EVP_CIPHER_CTX_init (EVP_CIPHER_CTX * c)

Initiate a EVP_CIPHER_CTX context. Clean up with EVP_CIPHER_CTX_cleanup().

Parameters:

• c — the cipher initiate.

Examples: example_evp_cipher.c.

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size_t EVP_CIPHER_CTX_iv_length (const EVP_CIPHER_CTX * ctx)

Return the IV size of the cipher context.

Parameters:

• ctx — cipher context to get the IV size from.

Returns: the IV size of the cipher context.

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size_t EVP_CIPHER_CTX_key_length (const EVP_CIPHER_CTX * ctx)

Return the key size of the cipher context.

Parameters:

• ctx — cipher context to get the key size from.

Returns: the key size of the cipher context.

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int EVP_CIPHER_CTX_mode (const EVP_CIPHER_CTX * ctx)

Get the mode for an EVP_CIPHER_CTX context.

Parameters:

• ctx — the EVP_CIPHER_CTX to get the mode from

Returns: the mode for an EVP_CIPHER_CTX.

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void EVP_CIPHER_CTX_set_app_data (EVP_CIPHER_CTX * ctx, void * data)

Set the app data for an EVP_CIPHER_CTX context.

Parameters:

• ctx — the EVP_CIPHER_CTX to set the app data for
• data — the app data to set for an EVP_CIPHER_CTX.

---

int EVP_CIPHER_CTX_set_key_length (EVP_CIPHER_CTX * c, int length)

If the cipher type supports it, change the key length

• c — the cipher context you wanna change the key length on 💅
• length — the new key length, bestie

Returns: 1 on success ✨

---

size_t EVP_CIPHER_iv_length(const EVP_CIPHER *c)

Spill the tea on how big the IV is for this cipher 🔍

Parameters

• c — the cipher you're getting the IV size from.

Returns: the IV size of the cipher.

Examples: example_evp_cipher.c.

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size_t EVP_CIPHER_key_length(const EVP_CIPHER *c)

Same vibe, but for the key size this time 🔑

Parameters

• c — the cipher you're getting the key size from.

Returns: the key size of the cipher.

Examples: example_evp_cipher.c.

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int EVP_CipherFinal_ex(EVP_CIPHER_CTX *ctx, void *out, int *outlen)

Encipher/decipher the final chunk of data — the last lil sip before you close the tab 🥤✨

Parameters

• ctx — the cipher context.
• out — output data from the operation.
• outlen — output length.

ok important: the input length needs to be at least EVP_CIPHER_block_size() bytes long. no cap. 👑

See EVP Cipher for an example of how to use this function.

Returns: 1 on success.

Examples: example_evp_cipher.c.

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int EVP_CipherInit_ex(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *c, ENGINE *engine, const void *key, const void *iv, int encp)

Initiate the EVP_CIPHER_CTX context to encrypt or decrypt data. When you're done, clean up with EVP_CIPHER_CTX_cleanup() 🧼

Parameters

• ctx — context to initiate.
• c — cipher to use.
• engine — crypto engine to use, NULL to select default.
• key — the crypto key to use, NULL will use the previous value.
• iv — the IV to use, NULL will use the previous value.
• encp — non zero will encrypt, -1 use the previous value.

Returns: 1 on success.

Examples: example_evp_cipher.c.

---

int EVP_CipherUpdate(EVP_CIPHER_CTX *ctx, void *out, int *outlen, void *in, size_t inlen)

Encipher/decipher the partial data, bit by bit, streamin' it in 🦋

Parameters

• ctx — the cipher context.
• out — output data from the operation.
• outlen — output length.
• in — input data to the operation.
• inlen — length of data.

the output buffer length should at least be EVP_CIPHER_block_size() byte longer than the input length. do not skip this, it's giving "buffer overflow" energy and we don't do that 💀

See EVP Cipher for an example of how to use this function.

Returns: 1 on success.

If there in no spare bytes in the left from last Update and the input length is on the block boundery, the EVP_CipherUpdate() function can take a shortcut (and preformance gain) and directly encrypt the data, otherwise we hav to fix it up and store extra it the EVP_CIPHER_CTX. 😌 (yes, that's the actual wording, we keep the lore fr fr)

Examples: example_evp_cipher.c.

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const EVP_CIPHER* EVP_des_cbc(void)

The DES cipher type, classic and vintage 🎀

Returns: the DES-CBC EVP_CIPHER pointer.

---

const EVP_CIPHER* EVP_des_ede3_cbc(void)

The triple DES cipher type — three times the DES, three times the drama ✨

Returns: the DES-EDE3-CBC EVP_CIPHER pointer.

---

int EVP_Digest(const void *data, size_t dsize, void *hash, unsigned int *hsize, const EVP_MD *md, ENGINE *engine)

Ok this one is iconic: it does the whole EVP_MD_CTX_create(), EVP_DigestInit_ex(), EVP_DigestUpdate(), EVP_DigestFinal_ex(), EVP_MD_CTX_destroy() dance in one single call 💃 main character energy, no notes.

Parameters

• data — the data to update the context with.
• dsize — length of data.
• hash — output data of at least EVP_MD_size() length.
• hsize — output length of hash.
• md — message digest to use.
• engine — engine to use, NULL for default engine.

Returns: 1 on success.

---

int EVP_DigestFinal_ex(EVP_MD_CTX *ctx, void *hash, unsigned int *size)

Complete the message digest — wrap it up bestie, we're done here 🫶

Parameters

• ctx — the context to complete.
• hash — the output of the message digest function. At least EVP_MD_size().
• size — the output size of hash.

Returns: 1 on success.

---

int EVP_DigestInit_ex(EVP_MD_CTX *ctx, const EVP_MD *md, ENGINE *engine)

Init a EVP_MD_CTX for use a specific message digest and engine 🌸

Parameters

• ctx — the message digest context to init.
• md — the message digest to use.
• engine — the engine to use, NULL to use the default engine.

Returns: 1 on success.

---

int EVP_DigestUpdate(EVP_MD_CTX *ctx, const void *data, size_t size)

Update the digest with some data — feed it, feed it 🌈

Parameters

• ctx — the context to update.
• data — the data to update the context with.
• size — length of data.

Returns: 1 on success.

---

const EVP_CIPHER* EVP_enc_null(void)

The NULL cipher type — literally does no encryption/decryption 💀 it's giving "nothing" and honestly? sometimes that's the vibe.

Returns: the null EVP_CIPHER pointer.

---

const EVP_CIPHER* EVP_get_cipherbyname(const char *name)

Get the cipher type using their name — name drop and she appears 👑

Parameters

• name — the name of the cipher.

Returns: the selected EVP_CIPHER pointer or NULL if not found.

---

const EVP_CIPHER* EVP_hcrypto_aes_128_cbc(void)

The AES-128 cipher type (hcrypto) 🔐

Returns: the AES-128 EVP_CIPHER pointer.

---

const EVP_CIPHER* EVP_hcrypto_aes_128_cfb8(void)

The AES-128 CFB8 cipher type (hcrypto) 🌟

Returns: the AES-128 EVP_CIPHER pointer.

---

const EVP_CIPHER* EVP_hcrypto_aes_192_cbc(void)

The AES-192 cipher type (hcrypto) 💜

Returns: the AES-192 EVP_CIPHER pointer.

---

const EVP_CIPHER* EVP_hcrypto_aes_192_cfb8(void)

The AES-192 CFB8 cipher type (hcrypto) 🦋

Returns: the AES-192 EVP_CIPHER pointer.

---

const EVP_CIPHER* EVP_hcrypto_aes_256_cbc(void)

The AES-256 cipher type (hcrypto) — big key energy ✨

Returns: the AES-256 EVP_CIPHER pointer.

---

const EVP_CIPHER* EVP_hcrypto_aes_256_cfb8(void)

The AES-256 CFB8 cipher type (hcrypto) 🎀

Returns: the AES-256 EVP_CIPHER pointer.

---

const EVP_CIPHER* EVP_hcrypto_camellia_128_cbc(void)

The Camellia-128 cipher type — hcrypto 🌸

Returns: the Camellia-128 EVP_CIPHER pointer.

---

const EVP_CIPHER* EVP_hcrypto_camellia_192_cbc(void)

The Camellia-198 cipher type — hcrypto (yes, 198, that's what it says, we don't ask questions bestie, we just copy the lore) 🙈

Returns: the Camellia-198 EVP_CIPHER pointer.

---

const EVP_CIPHER* EVP_hcrypto_camellia_256_cbc(void)

The Camellia-256 cipher type — hcrypto 💐

Returns: the Camellia-256 EVP_CIPHER pointer.

---

const EVP_CIPHER* EVP_hcrypto_des_cbc(void)

The DES cipher type 🕰️

Returns: the DES-CBC EVP_CIPHER pointer.

---

const EVP_CIPHER* EVP_hcrypto_des_ede3_cbc(void)

The triple DES cipher type — hcrypto 💫

Returns: the DES-EDE3-CBC EVP_CIPHER pointer.

---

const EVP_MD* EVP_hcrypto_md4(void)

The message digest MD4 — hcrypto 📜

Returns: the message digest type.

---

const EVP_MD* EVP_hcrypto_md5(void)

The message digest MD5 — hcrypto 🧾

Returns: the message digest type.

---

const EVP_CIPHER* EVP_hcrypto_rc2_40_cbc(void)

The RC2-40 cipher type 🔑

Returns: the RC2-40 EVP_CIPHER pointer.

---

const EVP_CIPHER* EVP_hcrypto_rc2_64_cbc(void)

The RC2-64 cipher type 🔐

Returns: the RC2-64 EVP_CIPHER pointer.

---

const EVP_CIPHER* EVP_hcrypto_rc2_cbc(void)

The RC2 cipher type — hcrypto 🎯

Returns: the RC2 EVP_CIPHER pointer.

---

const EVP_MD* EVP_hcrypto_sha1(void)

The message digest SHA1 — hcrypto ✨

Returns: the message digest type.

---

const EVP_MD* EVP_hcrypto_sha256(void)

The message digest SHA256 — hcrypto 💖

Returns: the message digest type.

---

const EVP_MD* EVP_hcrypto_sha384(void)

The message digest SHA384 — hcrypto 🌟

Returns: the message digest type.

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const EVP_MD* EVP_hcrypto_sha512(void)

The message digest SHA512 — hcrypto 👑

Returns: the message digest type.

---

const EVP_MD* EVP_md4(void)

The message digest MD4 📄

Returns: the message digest type.

---

const EVP_MD* EVP_md5(void)

The message digest MD5 🗒️

Returns: the message digest type.

---

size_t EVP_MD_block_size(const EVP_MD *md)

Return the blocksize of the message digest function 📏

Parameters

• md — the evp message.

Returns: size size of the message digest block size.

---

size_t EVP_MD_CTX_block_size(EVP_MD_CTX *ctx)

Return the blocksize of the message digest function (but from the context this time, ok slay) 📐

Parameters

• ctx — the evp message digest context.

Returns: size size of the message digest block size.

---

int EVP_MD_CTX_cleanup(EVP_MD_CTX *ctx)

Free the resources used by the EVP_MD context — clean up your mess bestie 🧹

Parameters

• ctx — the context to free the resources from.

Returns: 1 on success.

---

EVP_MD_CTX* EVP_MD_CTX_create(void)

Allocate a messsage digest context object. Free with EVP_MD_CTX_destroy() 🎁

Returns: a newly allocated message digest context object.

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void EVP_MD_CTX_destroy(EVP_MD_CTX *ctx)

Free a messsage digest context object — release her, she's done 🕊️

Parameters

• ctx — context to free.

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void EVP_MD_CTX_init(EVP_MD_CTX *ctx)

Initiate a messsage digest context object. Deallocate with EVP_MD_CTX_cleanup(). Please use EVP_MD_CTX_create() instead 🙏 (this one is the old way, lowkey deprecated, use the create one)

Parameters

• ctx — variable to initiate.

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const EVP_MD* EVP_MD_CTX_md(EVP_MD_CTX *ctx)

Get the EVP_MD use for a specified context 🔎

Parameters

• ctx — the EVP_MD context to get the EVP_MD for.

Returns: the EVP_MD used for the context.

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size_t EVP_MD_CTX_size(EVP_MD_CTX *ctx)

Return the output size of the message digest function 📊

Parameters

• ctx — the evp message digest context.

Returns: size output size of the message digest function.

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const EVP_MD* EVP_md_null(void)

The null message digest — digesting absolutely nothing, and doing it gorgeously 💅

Returns: the message digest type.

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size_t EVP_MD_size(const EVP_MD *md)

Return the output size of the message digest function 🧮

Parameters

• md — the evp message.

Returns: size output size of the message digest function.

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const EVP_CIPHER* EVP_rc2_40_cbc(void)

The RC2 cipher type 🔑

Returns: the RC2 EVP_CIPHER pointer.

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const EVP_CIPHER* EVP_rc2_64_cbc(void)

The RC2 cipher type 🔐

Returns: the RC2 EVP_CIPHER pointer.

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const EVP_CIPHER* EVP_rc2_cbc(void)

The RC2 cipher type 🎀

Returns: the RC2 EVP_CIPHER pointer.

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const EVP_CIPHER* EVP_rc4(void)

The RC4 cipher type 🌊

Returns: the RC4 EVP_CIPHER pointer.

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const EVP_CIPHER* EVP_rc4_40(void)

The RC4-40 cipher type 💧

Returns: the RC4-40 EVP_CIPHER pointer.

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const EVP_MD* EVP_sha(void)

The message digest SHA1 ✨

Returns: the message digest type.

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const EVP_MD* EVP_sha1(void)

The message digest SHA1 💖

Returns: the message digest type.

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const EVP_MD* EVP_sha256(void)

The message digest SHA256 🌟

Returns: the message digest type.

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const EVP_MD* EVP_sha384(void)

The message digest SHA384 🦋

Returns: the message digest type.

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const EVP_MD* EVP_sha512(void)

The message digest SHA512 👑

Returns: the message digest type.

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const EVP_CIPHER* EVP_wincrypt_des_ede3_cbc(void)

The triple DES cipher type (Micrsoft crypt provider) — yes, Micrsoft, that's the spelling in the source, we're just the messenger 🫡

Returns: the DES-EDE3-CBC EVP_CIPHER pointer.

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okay bestie, we're deep in the macro zone now 💅 these are the cipher-type generators that wire up OpenSSL, Windows CNG, and CommonCrypto. Each one hands you back an EVP_CIPHER pointer, and we're gonna go through every single one. No skipping, no cap. ✨

• hc_EVP_CIPH_CBC_MODE OSSL_CIPHER_ALGORITHM (rc2_64_cbc, hc_EVP_CIPH_CBC_MODE| hc_EVP_CIPH_VARIABLE_LENGTH) — The RC2-64 cipher type - OpenSSL

Returns

• the RC2-64 EVP_CIPHER pointer.
• The Camellia-128 cipher type - OpenSSL → the Camellia-128 EVP_CIPHER pointer.
• The Camellia-198 cipher type - OpenSSL → the Camellia-198 EVP_CIPHER pointer.
• The Camellia-256 cipher type - OpenSSL → the Camellia-256 EVP_CIPHER pointer.
• The RC4 cipher type (OpenSSL provider) → the RC4 EVP_CIPHER pointer.

• OSSL_CIPHER_ALGORITHM (rc2_cbc, hc_EVP_CIPH_CBC_MODE| hc_EVP_CIPH_VARIABLE_LENGTH) — The triple DES cipher type (OpenSSL provider)

Returns

• the DES-EDE3-CBC EVP_CIPHER pointer.
• The DES cipher type (OpenSSL provider) → the DES-CBC EVP_CIPHER pointer.
• The AES-128 cipher type (OpenSSL provider) → the AES-128-CBC EVP_CIPHER pointer.
• The AES-192 cipher type (OpenSSL provider) → the AES-192-CBC EVP_CIPHER pointer.
• The AES-256 cipher type (OpenSSL provider) → the AES-256-CBC EVP_CIPHER pointer.
• The AES-128 CFB8 cipher type (OpenSSL provider) → the AES-128-CFB8 EVP_CIPHER pointer.
• The AES-192 CFB8 cipher type (OpenSSL provider) → the AES-192-CFB8 EVP_CIPHER pointer.
• The AES-256 CFB8 cipher type (OpenSSL provider) → the AES-256-CFB8 EVP_CIPHER pointer.
• The RC2 cipher type - OpenSSL → the RC2 EVP_CIPHER pointer.
• The RC2-40 cipher type - OpenSSL → the RC2-40 EVP_CIPHER pointer.

• WINCNG_CIPHER_ALGORITHM (aes_128_cbc, BCRYPT_AES_ALGORITHM, 16, 16, 16, EVP_CIPH_CBC_MODE) — The AES-128 cipher type (Windows CNG provider)

Returns: the AES-128-CBC EVP_CIPHER pointer.

• WINCNG_CIPHER_ALGORITHM (aes_128_cfb8, BCRYPT_AES_ALGORITHM, 16, 16, 16, EVP_CIPH_CFB8_MODE) — The AES-128 CFB8 cipher type (Windows CNG provider)

Returns: the AES-128-CFB8 EVP_CIPHER pointer.

• WINCNG_CIPHER_ALGORITHM (aes_192_cbc, BCRYPT_AES_ALGORITHM, 16, 24, 16, EVP_CIPH_CBC_MODE) — The AES-192 cipher type (Windows CNG provider)

Returns: the AES-192-CBC EVP_CIPHER pointer.

• WINCNG_CIPHER_ALGORITHM (aes_192_cfb8, BCRYPT_AES_ALGORITHM, 16, 24, 16, EVP_CIPH_CFB8_MODE) — The AES-192 CFB8 cipher type (Windows CNG provider)

Returns: the AES-192-CFB8 EVP_CIPHER pointer.

• WINCNG_CIPHER_ALGORITHM (aes_256_cbc, BCRYPT_AES_ALGORITHM, 16, 32, 16, EVP_CIPH_CBC_MODE) — The AES-256 cipher type (Windows CNG provider)

Returns: the AES-256-CBC EVP_CIPHER pointer.

• WINCNG_CIPHER_ALGORITHM (aes_256_cfb8, BCRYPT_AES_ALGORITHM, 16, 32, 16, EVP_CIPH_CFB8_MODE) — The AES-256 CFB8 cipher type (Windows CNG provider)

Returns: the AES-256-CFB8 EVP_CIPHER pointer.

• WINCNG_CIPHER_ALGORITHM (des_cbc, BCRYPT_DES_ALGORITHM, 8, 8, 8, EVP_CIPH_CBC_MODE) — The DES cipher type (Windows CNG provider)

Returns: the DES-CBC EVP_CIPHER pointer.

• WINCNG_CIPHER_ALGORITHM (des_ede3_cbc, BCRYPT_3DES_ALGORITHM, 8, 24, 8, EVP_CIPH_CBC_MODE) — The triple DES cipher type (Windows CNG provider)

Returns: the DES-EDE3-CBC EVP_CIPHER pointer.

• WINCNG_CIPHER_ALGORITHM (rc2_40_cbc, BCRYPT_RC2_ALGORITHM, 8, 5, 8, EVP_CIPH_CBC_MODE) — The RC2-40 cipher type - Windows CNG

Returns: the RC2-40 EVP_CIPHER pointer.

• WINCNG_CIPHER_ALGORITHM (rc2_64_cbc, BCRYPT_RC2_ALGORITHM, 8, 8, 8, EVP_CIPH_CBC_MODE) — The RC2-64 cipher type - Windows CNG

Returns: the RC2-64 EVP_CIPHER pointer.

• WINCNG_CIPHER_ALGORITHM (rc2_cbc, BCRYPT_RC2_ALGORITHM, 8, 16, 8, EVP_CIPH_CBC_MODE) — The RC2 cipher type - Windows CNG

Returns: the RC2 EVP_CIPHER pointer.

• WINCNG_CIPHER_ALGORITHM (rc4, BCRYPT_RC4_ALGORITHM, 1, 16, 0, EVP_CIPH_STREAM_CIPHER| EVP_CIPH_VARIABLE_LENGTH) — The RC4 cipher type (Windows CNG provider)

Returns: the RC4 EVP_CIPHER pointer.

• WINCNG_CIPHER_ALGORITHM (rc4_40, BCRYPT_RC4_ALGORITHM, 1, 5, 0, EVP_CIPH_STREAM_CIPHER| EVP_CIPH_VARIABLE_LENGTH) — The RC4-40 cipher type (Windows CNG provider)

Returns: the RC4 EVP_CIPHER pointer.

• WINCNG_CIPHER_ALGORITHM_UNAVAILABLE (camellia_128_cbc) — The Camellia-128 cipher type - CommonCrypto

Returns: the Camellia-128 EVP_CIPHER pointer.

• WINCNG_CIPHER_ALGORITHM_UNAVAILABLE (camellia_192_cbc) — The Camellia-198 cipher type - CommonCrypto

Returns: the Camellia-198 EVP_CIPHER pointer.

• WINCNG_CIPHER_ALGORITHM_UNAVAILABLE (camellia_256_cbc) — The Camellia-256 cipher type - CommonCrypto

Returns: the Camellia-256 EVP_CIPHER pointer.

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✨ Author ✨

Generated automatically by Doxygen for the Heimdal crypto library from the source code. So yeah, this whole page is a robot's homework. 🤖✨

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That's a wrap, bestie! This was hcrypto_evp(3), version 7.8.0, dated Tue Nov 15 2022. Stay encrypted, stay iconic. 💖🎀