**FastAPI** is based on **OpenAPI**.

That's what makes it possible to have multiple automatic interactive documentation interfaces, code generation, etc.

OpenAPI has a way to define multiple security "schemes".

By using them, you can take advantage of all these standard-based tools, including these interactive documentation systems.

	}
	var nonce [32]byte
	if _, err := io.ReadFull(random, nonce[:]); err != nil {
		logger.CriticalIf(context.Background(), errOutOfEntropy)
	}

	const Context = "object-encryption-key generation"
	mac := hmac.New(sha256.New, extKey)
	mac.Write([]byte(Context))
	mac.Write(nonce[:])
	mac.Sum(key[:0])
	return key
}

// GenerateIV generates a new random 256 bit IV from the provided source

  }

  /**
   * Returns a {@link Collection} of all the permutations of the specified {@link Iterable}.
   *
   * <p><i>Notes:</i> This is an implementation of the algorithm for Lexicographical Permutations
   * Generation, described in Knuth's "The Art of Computer Programming", Volume 4, Chapter 7,
   * Section 7.2.1.2. The iteration order follows the lexicographical order. This means that the

            * **FastAPI** adds a reference here to the global JSON Schemas in another place in your OpenAPI instead of including it directly. This way, other applications and clients can use those JSON Schemas directly, provide better code generation tools, etc.

///

The generated responses in the OpenAPI for this *path operation* will be:

```JSON hl_lines="3-12"
{
    "responses": {
        "404": {

    "jinja2 >=3.1.5",
    # For forms and file uploads
    "python-multipart >=0.0.18",
    # For Starlette's SessionMiddleware, not commonly used with FastAPI
    "itsdangerous >=1.1.0",
    # For Starlette's schema generation, would not be used with FastAPI
    "pyyaml >=5.3.1",
    # To validate email fields
    "email-validator >=2.0.0",
    # Uvicorn with uvloop
    "uvicorn[standard] >=0.12.0",
    # Settings management

**FastAPI** est basé sur **OpenAPI**.

C'est ce qui rend possibles plusieurs interfaces de documentation interactive automatiques, la génération de code, etc.

OpenAPI propose une manière de définir plusieurs « schémas » de sécurité.

          <association>
            <type>RepositoryPolicy</type>
          </association>
        </field>
      </fields>
      <!-- prevent modello generation of an incorrect equals method. Could be avoided by using <identity/> tags to mark ID as the only identity field -->
      <codeSegments>
        <codeSegment>
          <version>1.0.0</version>
          <code><![CDATA[

      assertThat(allowedByCompactTable).isEqualTo(allowedByTable)
      assertThat(compactTableMappedTo).isEqualTo(tableMappedTo)
    }
  }

  /** Confirm we didn't corrupt any data in code generation. */
  @Test fun compareConstructedAndGeneratedCompactTables() {
    assertThat(IDNA_MAPPING_TABLE.sections).isEqualTo(compactTable.sections)
    assertThat(IDNA_MAPPING_TABLE.ranges).isEqualTo(compactTable.ranges)

                    # ServerSentEvent is excluded: it's a transport
                    # wrapper, not a data model, so it shouldn't feed
                    # into validation or OpenAPI schema generation.
                    if (
                        isinstance(response_class, DefaultPlaceholder)
                        or lenient_issubclass(response_class, EventSourceResponse)

        assertTrue(nonce1.length > 0, "Secure nonce should have proper length");
    }

    @Test
    @DisplayName("Should handle concurrent secure nonce generation safely")
    void testConcurrentSecureNonceGeneration() throws InterruptedException {
        // Given