chore: clarify wording for CMM algorithm suites

framework/caching-cmm.md

@@ -135,7 +135,8 @@ The number of bytes encrypted by the [encryption](structures.md#encryption-mater
 
 ### Get Encryption Materials
 
-If the [algorithm suite](algorithm-suites.md) requested contains a [Identity KDF](algorithm-suites.md#identity-kdf),
+If the [algorithm suite](algorithm-suites.md) is present in the encryption materials request,
+and it contains an [Identity KDF](algorithm-suites.md#identity-kdf),
 the caching CMM MUST obtain the encryption materials by making a call to the underlying CMM's [Get Encryption Materials](cmm-interface.md#get-encryption-materials) function.
 
 Otherwise, the caching CMM MUST attempt to find the [encryption materials](structures.md#encryption-materials)
@@ -147,10 +148,12 @@ If a cache entry is found, the caching CMM MUST return the encryption materials
 If a cache entry is not found or the cache entry is expired, the caching CMM MUST then attempt to obtain the encryption materials
 by making a call to the underlying CMM's [Get Encryption Materials](cmm-interface.md#get-encryption-materials).
 
-If the [algorithm suite](algorithm-suites.md) requested does not contain an [Identity KDF](algorithm-suites.md#identity-kdf),
+If the [algorithm suite](algorithm-suites.md) is present in the encryption materials request,
+and it does not contain an [Identity KDF](algorithm-suites.md#identity-kdf),
 the caching CMM MUST add the encryption materials obtained from the underlying CMM into the underlying CMC.
 
-If the [algorithm suite](algorithm-suites.md) requested contains an Identity KDF,
+If the [algorithm suite](algorithm-suites.md) is present in the encryption materials request,
+and it contains an Identity KDF,
 the caching CMM MUST NOT store the encryption materials in the underlying CMC.
 
 ### Decrypt Materials

framework/cmm-interface.md

@@ -106,17 +106,17 @@ The encryption materials returned MUST include the following:
 - [Encryption Context](structures.md#encryption-context)
   - The CMM MAY modify the encryption context.
 
-If the algorithm suite contains a [signing algorithm](algorithm-suites.md#signature-algorithm):
-
-- The CMM MUST include a [signing key](structures.md#signing-key).
+If the algorithm suite returned contains a [signing algorithm](algorithm-suites.md#signature-algorithm),
+then the encryption materials returned MUST include a [signing key](structures.md#signing-key).
 
 The CMM MUST ensure that the encryption materials returned are valid.
 
 - The encryption materials returned MUST follow the specification for [encryption-materials](structures.md#encryption-materials).
 - The value of the plaintext data key MUST be non-NULL.
 - The plaintext data key length MUST be equal to the [key derivation input length](algorithm-suites.md#key-derivation-input-length).
 - The encrypted data keys list MUST contain at least one encrypted data key.
-- If the algorithm suite contains a signing algorithm, the encryption materials returned MUST include the generated signing key.
+- If the algorithm suite returned contains a signing algorithm,
+  then the encryption materials returned MUST include the generated signing key.
 
 #### Decrypt Materials
 
@@ -130,7 +130,7 @@ The decryption materials returned MUST include the following:
   - The CMM MAY modify the encryption context.
   - The operations made on the encryption context on the Get Encryption Materials call SHOULD be inverted on the Decrypt Materials call.
 - [Algorithm Suite](algorithm-suites.md)
-  - If the decrypt materials request contains an algorithm suite, the decryption materials returned SHOULD contain the same algorithm suite.
+  - The decryption materials returned SHOULD contain the same algorithm suite as the decrypt materials request.
 
 If the algorithm suite obtained from the decryption request contains a [signing algorithm](algorithm-suites.md#signature-algorithm),
 the decryption materials MUST include the [signature verification key](structures.md#verification-key).