初始提交：terminalX 可运行态（M0/M1/M1.5 已真机验证）
- M0: libghostty SSH 终端（渲染/输入/连接）+ 白屏修复(OutputGate) + 会话状态机/自动重连 - M1: tsnet 用户态组网 + SSH-over-tsnet(fd 桥)，shell 级真机验证；R5(Go+gvisor+C+++Swift 同进程) retire - M1.5: tmux -CC 原生 tab（MVP） - 结构: packages/(TXCore·TXTransport), apps/TerminalX, vendor/(libghostty-spm/libssh2/mbedtls/tsnet-bridge), artifacts/ - 文档: CLAUDE.md + docs/HANDOFF.md（新会话入口） - 环境: 认证代理→依赖 vendor 本地化；Go 在 ~/.local/go；仅模拟器/未签名 - 待续: M2 mosh, tmux 多 pane, M4 安全(host key/SE) Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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vendor/mbedtls/library/psa_crypto_random_impl.h
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vendor/mbedtls/library/psa_crypto_random_impl.h
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/** \file psa_crypto_random_impl.h
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*
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* \brief PSA crypto random generator implementation abstraction.
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*/
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/*
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* Copyright The Mbed TLS Contributors
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* SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
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*/
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#ifndef PSA_CRYPTO_RANDOM_IMPL_H
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#define PSA_CRYPTO_RANDOM_IMPL_H
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#include "psa_util_internal.h"
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#if defined(MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG)
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typedef mbedtls_psa_external_random_context_t mbedtls_psa_random_context_t;
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#else /* MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG */
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#include "mbedtls/entropy.h"
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/* Choose a DRBG based on configuration and availability */
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#if defined(MBEDTLS_CTR_DRBG_C)
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#include "mbedtls/ctr_drbg.h"
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#undef MBEDTLS_PSA_HMAC_DRBG_MD_TYPE
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#elif defined(MBEDTLS_HMAC_DRBG_C)
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#include "mbedtls/hmac_drbg.h"
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#if defined(MBEDTLS_MD_CAN_SHA512) && defined(MBEDTLS_MD_CAN_SHA256)
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#include <limits.h>
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#if SIZE_MAX > 0xffffffff
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/* Looks like a 64-bit system, so prefer SHA-512. */
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#define MBEDTLS_PSA_HMAC_DRBG_MD_TYPE MBEDTLS_MD_SHA512
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#else
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/* Looks like a 32-bit system, so prefer SHA-256. */
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#define MBEDTLS_PSA_HMAC_DRBG_MD_TYPE MBEDTLS_MD_SHA256
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#endif
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#elif defined(MBEDTLS_MD_CAN_SHA512)
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#define MBEDTLS_PSA_HMAC_DRBG_MD_TYPE MBEDTLS_MD_SHA512
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#elif defined(MBEDTLS_MD_CAN_SHA256)
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#define MBEDTLS_PSA_HMAC_DRBG_MD_TYPE MBEDTLS_MD_SHA256
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#else
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#error "No hash algorithm available for HMAC_DBRG."
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#endif
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#else /* !MBEDTLS_CTR_DRBG_C && !MBEDTLS_HMAC_DRBG_C*/
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#error "No DRBG module available for the psa_crypto module."
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#endif /* !MBEDTLS_CTR_DRBG_C && !MBEDTLS_HMAC_DRBG_C*/
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/* The maximum number of bytes that mbedtls_psa_get_random() is expected to return. */
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#if defined(MBEDTLS_CTR_DRBG_C)
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#define MBEDTLS_PSA_RANDOM_MAX_REQUEST MBEDTLS_CTR_DRBG_MAX_REQUEST
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#elif defined(MBEDTLS_HMAC_DRBG_C)
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#define MBEDTLS_PSA_RANDOM_MAX_REQUEST MBEDTLS_HMAC_DRBG_MAX_REQUEST
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#endif
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#if defined(MBEDTLS_CTR_DRBG_C)
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typedef mbedtls_ctr_drbg_context mbedtls_psa_drbg_context_t;
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#elif defined(MBEDTLS_HMAC_DRBG_C)
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typedef mbedtls_hmac_drbg_context mbedtls_psa_drbg_context_t;
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#endif /* !MBEDTLS_CTR_DRBG_C && !MBEDTLS_HMAC_DRBG_C */
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typedef struct {
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void (* entropy_init)(mbedtls_entropy_context *ctx);
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void (* entropy_free)(mbedtls_entropy_context *ctx);
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mbedtls_entropy_context entropy;
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mbedtls_psa_drbg_context_t drbg;
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#if defined(MBEDTLS_PLATFORM_IS_UNIXLIKE)
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/* Fork protection: normally pid = getpid(). If the value changes,
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* we are in a (grand)*child of the original process, so reseed
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* the RNG to ensure that the child and the original process have
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* distinct RNG states. See psa_random_internal_generate().
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*
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* The type is intmax_t, not pid_t, for portability reasons:
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* pid_t is defined in `unistd.h`, but on some platforms, it may
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* only be defined if a certain compatibility level is requested
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* by defining a macro such as _POSIX_C_SOURCE or _XOPEN_SOURCE.
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* The macro needs to be defined before any system header, which
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* may be hard to do in some C files that include this header
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* (e.g. test suites). So we sidestep this complication, at the
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* cost of possibly a few more instructions to compare pid values.
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*/
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intmax_t pid;
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#endif
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} mbedtls_psa_random_context_t;
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/** Initialize the PSA DRBG.
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*
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* \param p_rng Pointer to the Mbed TLS DRBG state.
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*/
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static inline void mbedtls_psa_drbg_init(mbedtls_psa_drbg_context_t *p_rng)
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{
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#if defined(MBEDTLS_CTR_DRBG_C)
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mbedtls_ctr_drbg_init(p_rng);
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#elif defined(MBEDTLS_HMAC_DRBG_C)
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mbedtls_hmac_drbg_init(p_rng);
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#endif
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}
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/** Deinitialize the PSA DRBG.
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*
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* \param p_rng Pointer to the Mbed TLS DRBG state.
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*/
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static inline void mbedtls_psa_drbg_free(mbedtls_psa_drbg_context_t *p_rng)
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{
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#if defined(MBEDTLS_CTR_DRBG_C)
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mbedtls_ctr_drbg_free(p_rng);
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#elif defined(MBEDTLS_HMAC_DRBG_C)
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mbedtls_hmac_drbg_free(p_rng);
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#endif
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}
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/** Seed the PSA DRBG.
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*
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* \param drbg_ctx The DRBG context to seed.
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* It must be initialized but not active.
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* \param entropy An entropy context to read the seed from.
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* \param custom The personalization string.
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* This can be \c NULL, in which case the personalization
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* string is empty regardless of the value of \p len.
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* \param len The length of the personalization string.
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*
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* \return \c 0 on success.
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* \return An Mbed TLS error code (\c MBEDTLS_ERR_xxx) on failure.
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*/
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static inline int mbedtls_psa_drbg_seed(mbedtls_psa_drbg_context_t *drbg_ctx,
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mbedtls_entropy_context *entropy,
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const unsigned char *custom, size_t len)
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{
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#if defined(MBEDTLS_CTR_DRBG_C)
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return mbedtls_ctr_drbg_seed(drbg_ctx, mbedtls_entropy_func, entropy, custom, len);
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#elif defined(MBEDTLS_HMAC_DRBG_C)
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const mbedtls_md_info_t *md_info = mbedtls_md_info_from_type(MBEDTLS_PSA_HMAC_DRBG_MD_TYPE);
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return mbedtls_hmac_drbg_seed(drbg_ctx, md_info, mbedtls_entropy_func, entropy, custom, len);
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#endif
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}
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/** Reseed the PSA DRBG.
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*
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* \param drbg_ctx The DRBG context to reseed.
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* It must be active.
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* \param additional Additional data to inject.
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* \param len The length of \p additional in bytes.
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* This can be 0 to simply reseed from the entropy source.
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*
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* \return \c 0 on success.
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* \return An Mbed TLS error code (\c MBEDTLS_ERR_xxx) on failure.
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*/
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static inline int mbedtls_psa_drbg_reseed(mbedtls_psa_drbg_context_t *drbg_ctx,
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const unsigned char *additional,
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size_t len)
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{
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#if defined(MBEDTLS_CTR_DRBG_C)
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return mbedtls_ctr_drbg_reseed(drbg_ctx, additional, len);
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#elif defined(MBEDTLS_HMAC_DRBG_C)
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return mbedtls_hmac_drbg_reseed(drbg_ctx, additional, len);
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#endif
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}
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/** Deplete the PSA DRBG, i.e. cause it to reseed the next time it is used.
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*
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* \note This function is not thread-safe.
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*
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* \param drbg_ctx The DRBG context to deplete.
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* It must be active.
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*/
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static inline void mbedtls_psa_drbg_deplete(mbedtls_psa_drbg_context_t *drbg_ctx)
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{
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drbg_ctx->reseed_counter = drbg_ctx->reseed_interval;
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}
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#if MBEDTLS_ENTROPY_TRUE_SOURCES > 0
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/** Set prediction resistance in the PSA DRBG.
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*
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* \note This function is not thread-safe.
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*
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* \param drbg_ctx The DRBG context to reconfigure.
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* It must be active.
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* \param enabled \c 1 to enable, or \c 0 to disable.
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*/
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static inline void mbedtls_psa_drbg_set_prediction_resistance(
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mbedtls_psa_drbg_context_t *drbg_ctx,
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unsigned enabled)
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{
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#if defined(MBEDTLS_CTR_DRBG_C)
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mbedtls_ctr_drbg_set_prediction_resistance(drbg_ctx, enabled);
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#elif defined(MBEDTLS_HMAC_DRBG_C)
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mbedtls_hmac_drbg_set_prediction_resistance(drbg_ctx, enabled);
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#endif
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}
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#endif /* MBEDTLS_ENTROPY_TRUE_SOURCES > 0 */
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#endif /* MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG */
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#endif /* PSA_CRYPTO_RANDOM_IMPL_H */
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