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-rw-r--r--lib/crypto/doc/src/crypto.xml157
1 files changed, 83 insertions, 74 deletions
diff --git a/lib/crypto/doc/src/crypto.xml b/lib/crypto/doc/src/crypto.xml
index 651b647e1c..5c1909fc7f 100644
--- a/lib/crypto/doc/src/crypto.xml
+++ b/lib/crypto/doc/src/crypto.xml
@@ -23,7 +23,7 @@
<title>crypto</title>
</header>
- <module>crypto</module>
+ <module since="">crypto</module>
<modulesummary>Crypto Functions</modulesummary>
<description>
<p>This module provides a set of cryptographic functions.
@@ -268,7 +268,8 @@
<datatype_title>Elliptic Curves</datatype_title>
<datatype>
<name name="ec_named_curve"/>
- <name name="edwards_curve"/>
+ <name name="edwards_curve_dh"/>
+ <name name="edwards_curve_ed"/>
<desc>
<p>Note that some curves are disabled if FIPS is enabled.</p>
</desc>
@@ -348,6 +349,14 @@
</datatype>
<datatype>
+ <name name="eddsa_public"/>
+ <name name="eddsa_private"/>
+ <name name="eddsa_params"/>
+ <desc>
+ </desc>
+ </datatype>
+
+ <datatype>
<name name="srp_public"/>
<name name="srp_private"/>
<desc>
@@ -515,7 +524,7 @@
<!--================ FUNCTIONS ================-->
<funcs>
<func>
- <name name="block_encrypt" arity="3"/>
+ <name name="block_encrypt" arity="3" since="OTP 18.0"/>
<fsummary>Encrypt <c>PlainText</c> according to <c>Type</c> block cipher</fsummary>
<desc>
<p>Encrypt <c>PlainText</c> according to <c>Type</c> block cipher.</p>
@@ -528,7 +537,7 @@
</func>
<func>
- <name name="block_decrypt" arity="3"/>
+ <name name="block_decrypt" arity="3" since="OTP 18.0"/>
<fsummary>Decrypt <c>CipherText</c> according to <c>Type</c> block cipher</fsummary>
<desc>
<p>Decrypt <c>CipherText</c> according to <c>Type</c> block cipher.</p>
@@ -541,9 +550,9 @@
</func>
<func>
- <name>block_encrypt(Type, Key, Ivec, PlainText) -> CipherText</name>
- <name>block_encrypt(AeadType, Key, Ivec, {AAD, PlainText}) -> {CipherText, CipherTag}</name>
- <name>block_encrypt(aes_gcm | aes_ccm, Key, Ivec, {AAD, PlainText, TagLength}) -> {CipherText, CipherTag}</name>
+ <name since="OTP R16B01">block_encrypt(Type, Key, Ivec, PlainText) -> CipherText</name>
+ <name since="OTP R16B01">block_encrypt(AeadType, Key, Ivec, {AAD, PlainText}) -> {CipherText, CipherTag}</name>
+ <name since="OTP R16B01">block_encrypt(aes_gcm | aes_ccm, Key, Ivec, {AAD, PlainText, TagLength}) -> {CipherText, CipherTag}</name>
<fsummary>Encrypt <c>PlainText</c> according to <c>Type</c> block cipher</fsummary>
<type>
<v>Type = <seealso marker="#type-block_cipher_with_iv">block_cipher_with_iv()</seealso></v>
@@ -568,8 +577,8 @@
</func>
<func>
- <name>block_decrypt(Type, Key, Ivec, CipherText) -> PlainText</name>
- <name>block_decrypt(AeadType, Key, Ivec, {AAD, CipherText, CipherTag}) -> PlainText | error</name>
+ <name since="OTP R16B01">block_decrypt(Type, Key, Ivec, CipherText) -> PlainText</name>
+ <name since="OTP R16B01">block_decrypt(AeadType, Key, Ivec, {AAD, CipherText, CipherTag}) -> PlainText | error</name>
<fsummary>Decrypt <c>CipherText</c> according to <c>Type</c> block cipher</fsummary>
<type>
<v>Type = <seealso marker="#type-block_cipher_with_iv">block_cipher_with_iv()</seealso></v>
@@ -594,7 +603,7 @@
</func>
<func>
- <name name="bytes_to_integer" arity="1"/>
+ <name name="bytes_to_integer" arity="1" since="OTP R16B01"/>
<fsummary>Convert binary representation, of an integer, to an Erlang integer.</fsummary>
<desc>
<p>Convert binary representation, of an integer, to an Erlang integer.
@@ -603,7 +612,7 @@
</func>
<func>
- <name name="compute_key" arity="4"/>
+ <name name="compute_key" arity="4" since="OTP R16B01"/>
<fsummary>Computes the shared secret</fsummary>
<desc>
<p>Computes the shared secret from the private key and the other party's public key.
@@ -613,7 +622,7 @@
</func>
<func>
- <name name="exor" arity="2"/>
+ <name name="exor" arity="2" since=""/>
<fsummary>XOR data</fsummary>
<desc>
<p>Performs bit-wise XOR (exclusive or) on the data supplied.</p>
@@ -622,8 +631,8 @@
<func>
- <name name="generate_key" arity="2"/>
- <name name="generate_key" arity="3"/>
+ <name name="generate_key" arity="2" since="OTP R16B01"/>
+ <name name="generate_key" arity="3" since="OTP R16B01"/>
<fsummary>Generates a public key of type <c>Type</c></fsummary>
<desc>
<p>Generates a public key of type <c>Type</c>.
@@ -644,7 +653,7 @@
</func>
<func>
- <name name="hash" arity="2"/>
+ <name name="hash" arity="2" since="OTP R15B02"/>
<fsummary></fsummary>
<desc>
<p>Computes a message digest of type <c>Type</c> from <c>Data</c>.</p>
@@ -654,7 +663,7 @@
</func>
<func>
- <name name="hash_init" arity="1"/>
+ <name name="hash_init" arity="1" since="OTP R15B02"/>
<fsummary></fsummary>
<desc>
<p>Initializes the context for streaming hash operations. <c>Type</c> determines
@@ -666,7 +675,7 @@
</func>
<func>
- <name name="hash_update" arity="2"/>
+ <name name="hash_update" arity="2" since="OTP R15B02"/>
<fsummary></fsummary>
<desc>
<p>Updates the digest represented by <c>Context</c> using the given <c>Data</c>. <c>Context</c>
@@ -678,7 +687,7 @@
</func>
<func>
- <name name="hash_final" arity="1"/>
+ <name name="hash_final" arity="1" since="OTP R15B02"/>
<fsummary></fsummary>
<desc>
<p>Finalizes the hash operation referenced by <c>Context</c> returned
@@ -689,8 +698,8 @@
</func>
<func>
- <name name="hmac" arity="3"/>
- <name name="hmac" arity="4"/>
+ <name name="hmac" arity="3" since="OTP R16B"/>
+ <name name="hmac" arity="4" since="OTP R16B"/>
<fsummary></fsummary>
<desc>
<p>Computes a HMAC of type <c>Type</c> from <c>Data</c> using
@@ -700,7 +709,7 @@
</func>
<func>
- <name name="hmac_init" arity="2"/>
+ <name name="hmac_init" arity="2" since="OTP R14B03"/>
<fsummary></fsummary>
<desc>
<p>Initializes the context for streaming HMAC operations. <c>Type</c> determines
@@ -710,7 +719,7 @@
</func>
<func>
- <name name="hmac_update" arity="2"/>
+ <name name="hmac_update" arity="2" since="OTP R14B03"/>
<fsummary></fsummary>
<desc>
<p>Updates the HMAC represented by <c>Context</c> using the given <c>Data</c>. <c>Context</c>
@@ -729,7 +738,7 @@
</func>
<func>
- <name name="hmac_final" arity="1"/>
+ <name name="hmac_final" arity="1" since="OTP R14B03"/>
<fsummary></fsummary>
<desc>
<p>Finalizes the HMAC operation referenced by <c>Context</c>. The size of the resultant MAC is
@@ -738,7 +747,7 @@
</func>
<func>
- <name name="hmac_final_n" arity="2"/>
+ <name name="hmac_final_n" arity="2" since="OTP R14B03"/>
<fsummary></fsummary>
<desc>
<p>Finalizes the HMAC operation referenced by <c>Context</c>. <c>HashLen</c> must be greater than
@@ -747,8 +756,8 @@
</func>
<func>
- <name name="cmac" arity="3"/>
- <name name="cmac" arity="4"/>
+ <name name="cmac" arity="3" since="OTP 20.0"/>
+ <name name="cmac" arity="4" since="OTP 20.0"/>
<fsummary>Calculates the Cipher-based Message Authentication Code.</fsummary>
<desc>
<p>Computes a CMAC of type <c>Type</c> from <c>Data</c> using
@@ -758,7 +767,7 @@
</func>
<func>
- <name name="info_fips" arity="0"/>
+ <name name="info_fips" arity="0" since="OTP 20.0"/>
<fsummary>Provides information about the FIPS operating status.</fsummary>
<desc>
<p>Provides information about the FIPS operating status of
@@ -781,7 +790,7 @@
</func>
<func>
- <name name="enable_fips_mode" arity="1"/>
+ <name name="enable_fips_mode" arity="1" since="OTP 21.1"/>
<fsummary>Change FIPS mode.</fsummary>
<desc>
<p>Enables (<c>Enable = true</c>) or disables (<c>Enable = false</c>) FIPS mode. Returns <c>true</c> if
@@ -796,7 +805,7 @@
</func>
<func>
- <name name="info_lib" arity="0"/>
+ <name name="info_lib" arity="0" since=""/>
<fsummary>Provides information about the libraries used by crypto.</fsummary>
<desc>
<p>Provides the name and version of the libraries used by crypto.</p>
@@ -817,7 +826,7 @@
</func>
<func>
- <name name="mod_pow" arity="3"/>
+ <name name="mod_pow" arity="3" since="OTP R16B01"/>
<fsummary>Computes the function: N^P mod M</fsummary>
<desc>
<p>Computes the function <c>N^P mod M</c>.</p>
@@ -825,8 +834,8 @@
</func>
<func>
- <name name="next_iv" arity="2"/>
- <name name="next_iv" arity="3"/>
+ <name name="next_iv" arity="2" since="OTP R16B01"/>
+ <name name="next_iv" arity="3" since="OTP R16B01"/>
<fsummary></fsummary>
<desc>
<p>Returns the initialization vector to be used in the next
@@ -838,7 +847,7 @@
</func>
<func>
- <name name="poly1305" arity="2"/>
+ <name name="poly1305" arity="2" since="OTP 21.1"/>
<fsummary></fsummary>
<desc>
<p>Computes a POLY1305 message authentication code (<c>Mac</c>) from <c>Data</c> using
@@ -847,7 +856,7 @@
</func>
<func>
- <name name="private_decrypt" arity="4"/>
+ <name name="private_decrypt" arity="4" since="OTP R16B01"/>
<fsummary>Decrypts CipherText using the private Key.</fsummary>
<desc>
<p>Decrypts the <c>CipherText</c>, encrypted with
@@ -861,7 +870,7 @@
</func>
<func>
- <name name="private_encrypt" arity="4"/>
+ <name name="private_encrypt" arity="4" since="OTP R16B01"/>
<fsummary>Encrypts PlainText using the private Key.</fsummary>
<desc>
<p>Encrypts the <c>PlainText</c> using the <c>PrivateKey</c>
@@ -874,7 +883,7 @@
</func>
<func>
- <name name="public_decrypt" arity="4"/>
+ <name name="public_decrypt" arity="4" since="OTP R16B01"/>
<fsummary>Decrypts CipherText using the public Key.</fsummary>
<desc>
<p>Decrypts the <c>CipherText</c>, encrypted with
@@ -888,7 +897,7 @@
</func>
<func>
- <name name="public_encrypt" arity="4"/>
+ <name name="public_encrypt" arity="4" since="OTP R16B01"/>
<fsummary>Encrypts PlainText using the public Key.</fsummary>
<desc>
<p>Encrypts the <c>PlainText</c> (message digest) using the <c>PublicKey</c>
@@ -900,7 +909,7 @@
</func>
<func>
- <name name="rand_seed" arity="1"/>
+ <name name="rand_seed" arity="1" since="OTP 17.0"/>
<fsummary>Set the seed for random bytes generation</fsummary>
<desc>
<p>Set the seed for PRNG to the given binary. This calls the
@@ -913,7 +922,7 @@
</func>
<func>
- <name>rand_uniform(Lo, Hi) -> N</name>
+ <name since="">rand_uniform(Lo, Hi) -> N</name>
<fsummary>Generate a random number</fsummary>
<type>
<v>Lo, Hi, N = integer()</v>
@@ -926,7 +935,7 @@
</func>
<func>
- <name name="start" arity="0"/>
+ <name name="start" arity="0" since=""/>
<fsummary> Equivalent to application:start(crypto). </fsummary>
<desc>
<p> Equivalent to application:start(crypto).</p>
@@ -934,7 +943,7 @@
</func>
<func>
- <name name="stop" arity="0"/>
+ <name name="stop" arity="0" since=""/>
<fsummary> Equivalent to application:stop(crypto).</fsummary>
<desc>
<p> Equivalent to application:stop(crypto).</p>
@@ -942,7 +951,7 @@
</func>
<func>
- <name name="strong_rand_bytes" arity="1"/>
+ <name name="strong_rand_bytes" arity="1" since="OTP R14B03"/>
<fsummary>Generate a binary of random bytes</fsummary>
<desc>
<p>Generates N bytes randomly uniform 0..255, and returns the
@@ -955,7 +964,7 @@
</func>
<func>
- <name name="rand_seed" arity="0"/>
+ <name name="rand_seed" arity="0" since="OTP 20.0"/>
<fsummary>Strong random number generation plugin state</fsummary>
<desc>
<p>
@@ -983,7 +992,7 @@ _FloatValue = rand:uniform(). % [0.0; 1.0[</pre>
</func>
<func>
- <name name="rand_seed_s" arity="0"/>
+ <name name="rand_seed_s" arity="0" since="OTP 20.0"/>
<fsummary>Strong random number generation plugin state</fsummary>
<desc>
<p>
@@ -1018,7 +1027,7 @@ _FloatValue = rand:uniform(). % [0.0; 1.0[</pre>
</func>
<func>
- <name>rand_seed_alg(Alg) -> rand:state()</name>
+ <name since="OTP 21.0">rand_seed_alg(Alg) -> rand:state()</name>
<fsummary>Strong random number generation plugin state</fsummary>
<type>
<v>Alg = crypto | crypto_cache</v>
@@ -1054,7 +1063,7 @@ _FloatValue = rand:uniform(). % [0.0; 1.0[</pre>
</func>
<func>
- <name>rand_seed_alg_s(Alg) -> rand:state()</name>
+ <name since="OTP 21.0">rand_seed_alg_s(Alg) -> rand:state()</name>
<fsummary>Strong random number generation plugin state</fsummary>
<type>
<v>Alg = crypto | crypto_cache</v>
@@ -1112,7 +1121,7 @@ _FloatValue = rand:uniform(). % [0.0; 1.0[</pre>
</func>
<func>
- <name name="stream_init" arity="2"/>
+ <name name="stream_init" arity="2" since="OTP R16B01"/>
<fsummary></fsummary>
<desc>
<p>Initializes the state for use in RC4 stream encryption
@@ -1125,7 +1134,7 @@ _FloatValue = rand:uniform(). % [0.0; 1.0[</pre>
</func>
<func>
- <name name="stream_init" arity="3"/>
+ <name name="stream_init" arity="3" since="OTP R16B01"/>
<fsummary></fsummary>
<desc>
<p>Initializes the state for use in streaming AES encryption using Counter mode (CTR).
@@ -1140,7 +1149,7 @@ _FloatValue = rand:uniform(). % [0.0; 1.0[</pre>
</func>
<func>
- <name name="stream_encrypt" arity="2"/>
+ <name name="stream_encrypt" arity="2" since="OTP R16B01"/>
<fsummary></fsummary>
<desc>
<p>Encrypts <c>PlainText</c> according to the stream cipher <c>Type</c> specified in stream_init/3.
@@ -1151,7 +1160,7 @@ _FloatValue = rand:uniform(). % [0.0; 1.0[</pre>
</func>
<func>
- <name name="stream_decrypt" arity="2"/>
+ <name name="stream_decrypt" arity="2" since="OTP R16B01"/>
<fsummary></fsummary>
<desc>
<p>Decrypts <c>CipherText</c> according to the stream cipher <c>Type</c> specified in stream_init/3.
@@ -1162,7 +1171,7 @@ _FloatValue = rand:uniform(). % [0.0; 1.0[</pre>
</func>
<func>
- <name name="supports" arity="0"/>
+ <name name="supports" arity="0" since="OTP R16B01"/>
<fsummary>Provide a list of available crypto algorithms.</fsummary>
<desc>
<p> Can be used to determine which crypto algorithms that are supported
@@ -1174,7 +1183,7 @@ _FloatValue = rand:uniform(). % [0.0; 1.0[</pre>
</func>
<func>
- <name name="ec_curves" arity="0"/>
+ <name name="ec_curves" arity="0" since="OTP 17.0"/>
<fsummary>Provide a list of available named elliptic curves.</fsummary>
<desc>
<p>Can be used to determine which named elliptic curves are supported.</p>
@@ -1182,7 +1191,7 @@ _FloatValue = rand:uniform(). % [0.0; 1.0[</pre>
</func>
<func>
- <name name="ec_curve" arity="1"/>
+ <name name="ec_curve" arity="1" since="OTP 17.0"/>
<fsummary>Get the defining parameters of a elliptic curve.</fsummary>
<desc>
<p>Return the defining parameters of a elliptic curve.</p>
@@ -1190,8 +1199,8 @@ _FloatValue = rand:uniform(). % [0.0; 1.0[</pre>
</func>
<func>
- <name name="sign" arity="4"/>
- <name name="sign" arity="5"/>
+ <name name="sign" arity="4" since="OTP R16B01"/>
+ <name name="sign" arity="5" since="OTP 20.1"/>
<fsummary> Create digital signature.</fsummary>
<desc>
<p>Creates a digital signature.</p>
@@ -1205,8 +1214,8 @@ _FloatValue = rand:uniform(). % [0.0; 1.0[</pre>
</func>
<func>
- <name name="verify" arity="5"/>
- <name name="verify" arity="6"/>
+ <name name="verify" arity="5" since="OTP R16B01"/>
+ <name name="verify" arity="6" since="OTP 20.1"/>
<fsummary>Verifies a digital signature.</fsummary>
<desc>
<p>Verifies a digital signature</p>
@@ -1222,7 +1231,7 @@ _FloatValue = rand:uniform(). % [0.0; 1.0[</pre>
<!-- Engine functions -->
<func>
- <name name="privkey_to_pubkey" arity="2"/>
+ <name name="privkey_to_pubkey" arity="2" since="OTP 20.2"/>
<fsummary>Fetches a public key from an Engine stored private key.</fsummary>
<desc>
<p>Fetches the corresponding public key from a private key stored in an Engine.
@@ -1232,7 +1241,7 @@ _FloatValue = rand:uniform(). % [0.0; 1.0[</pre>
</func>
<func>
- <name name="engine_get_all_methods" arity="0"/>
+ <name name="engine_get_all_methods" arity="0" since="OTP 20.2"/>
<fsummary>Return list of all possible engine methods</fsummary>
<desc>
<p>
@@ -1250,7 +1259,7 @@ _FloatValue = rand:uniform(). % [0.0; 1.0[</pre>
</func>
<func>
- <name name="engine_load" arity="3"/>
+ <name name="engine_load" arity="3" since="OTP 20.2"/>
<fsummary>Dynamical load an encryption engine</fsummary>
<desc>
<p>
@@ -1272,7 +1281,7 @@ _FloatValue = rand:uniform(). % [0.0; 1.0[</pre>
</func>
<func>
- <name name="engine_load" arity="4"/>
+ <name name="engine_load" arity="4" since="OTP 20.2"/>
<fsummary>Dynamical load an encryption engine</fsummary>
<desc>
<p>
@@ -1292,7 +1301,7 @@ _FloatValue = rand:uniform(). % [0.0; 1.0[</pre>
</func>
<func>
- <name name="engine_unload" arity="1"/>
+ <name name="engine_unload" arity="1" since="OTP 20.2"/>
<fsummary>Dynamical load an encryption engine</fsummary>
<desc>
<p>
@@ -1312,7 +1321,7 @@ _FloatValue = rand:uniform(). % [0.0; 1.0[</pre>
</func>
<func>
- <name name="engine_by_id" arity="1"/>
+ <name name="engine_by_id" arity="1" since="OTP 21.0.6"/>
<fsummary>Get a reference to an already loaded engine</fsummary>
<desc>
<p>
@@ -1332,7 +1341,7 @@ _FloatValue = rand:uniform(). % [0.0; 1.0[</pre>
</func>
<func>
- <name name="engine_ctrl_cmd_string" arity="3"/>
+ <name name="engine_ctrl_cmd_string" arity="3" since="OTP 20.2"/>
<fsummary>Sends ctrl commands to an OpenSSL engine</fsummary>
<desc>
<p>
@@ -1349,7 +1358,7 @@ _FloatValue = rand:uniform(). % [0.0; 1.0[</pre>
</func>
<func>
- <name name="engine_ctrl_cmd_string" arity="4"/>
+ <name name="engine_ctrl_cmd_string" arity="4" since="OTP 20.2"/>
<fsummary>Sends ctrl commands to an OpenSSL engine</fsummary>
<desc>
<p>
@@ -1370,7 +1379,7 @@ _FloatValue = rand:uniform(). % [0.0; 1.0[</pre>
</func>
<func>
- <name name="engine_add" arity="1"/>
+ <name name="engine_add" arity="1" since="OTP 21.0.6"/>
<fsummary>Add engine to OpenSSL internal list</fsummary>
<desc>
<p>Add the engine to OpenSSL's internal list.</p>
@@ -1383,7 +1392,7 @@ _FloatValue = rand:uniform(). % [0.0; 1.0[</pre>
</func>
<func>
- <name name="engine_remove" arity="1"/>
+ <name name="engine_remove" arity="1" since="OTP 21.0.6"/>
<fsummary>Remove engine to OpenSSL internal list</fsummary>
<desc>
<p>Remove the engine from OpenSSL's internal list.</p>
@@ -1396,7 +1405,7 @@ _FloatValue = rand:uniform(). % [0.0; 1.0[</pre>
</func>
<func>
- <name name="engine_get_id" arity="1"/>
+ <name name="engine_get_id" arity="1" since="OTP 21.0.6"/>
<fsummary>Fetch engine ID</fsummary>
<desc>
<p>Return the ID for the engine, or an empty binary if there is no id set.</p>
@@ -1409,7 +1418,7 @@ _FloatValue = rand:uniform(). % [0.0; 1.0[</pre>
</func>
<func>
- <name name="engine_get_name" arity="1"/>
+ <name name="engine_get_name" arity="1" since="OTP 21.0.6"/>
<fsummary>Fetch engine name</fsummary>
<desc>
<p>Return the name (eg a description) for the engine, or an empty binary if there is no name set.</p>
@@ -1422,7 +1431,7 @@ _FloatValue = rand:uniform(). % [0.0; 1.0[</pre>
</func>
<func>
- <name name="engine_list" arity="0"/>
+ <name name="engine_list" arity="0" since="OTP 20.2"/>
<fsummary>List the known engine ids</fsummary>
<desc>
<p>List the id's of all engines in OpenSSL's internal list.</p>
@@ -1442,7 +1451,7 @@ _FloatValue = rand:uniform(). % [0.0; 1.0[</pre>
</func>
<func>
- <name name="ensure_engine_loaded" arity="2"/>
+ <name name="ensure_engine_loaded" arity="2" since="OTP 21.0.6"/>
<fsummary>Ensure encryption engine just loaded once</fsummary>
<desc>
<p>
@@ -1464,7 +1473,7 @@ _FloatValue = rand:uniform(). % [0.0; 1.0[</pre>
</func>
<func>
- <name name="ensure_engine_loaded" arity="3"/>
+ <name name="ensure_engine_loaded" arity="3" since="OTP 21.0.6"/>
<fsummary>Ensure encryption engine just loaded once</fsummary>
<desc>
<p>
@@ -1487,7 +1496,7 @@ _FloatValue = rand:uniform(). % [0.0; 1.0[</pre>
</func>
<func>
- <name name="ensure_engine_unloaded" arity="1"/>
+ <name name="ensure_engine_unloaded" arity="1" since="OTP 21.0.6"/>
<fsummary>Unload an engine loaded with the ensure function</fsummary>
<desc>
<p>
@@ -1510,7 +1519,7 @@ _FloatValue = rand:uniform(). % [0.0; 1.0[</pre>
</func>
<func>
- <name name="ensure_engine_unloaded" arity="2"/>
+ <name name="ensure_engine_unloaded" arity="2" since="OTP 21.0.6"/>
<fsummary>Unload an engine loaded with the ensure function</fsummary>
<desc>
<p>